8728 (number)
8,728 (eight thousand seven hundred twentyeight) is an even fourdigits composite number following 8727 and preceding 8729. In scientific notation, it is written as 8.728 × 10^{3}. The sum of its digits is 25. It has a total of 4 prime factors and 8 positive divisors. There are 4,360 positive integers (up to 8728) that are relatively prime to 8728.
Basic properties
 Is Prime? No
 Number parity Even
 Number length 4
 Sum of Digits 25
 Digital Root 7
Name
Short name  8 thousand 728 

Full name  eight thousand seven hundred twentyeight 
Notation
Scientific notation  8.728 × 10^{3} 

Engineering notation  8.728 × 10^{3} 
Prime Factorization of 8728
Prime Factorization 2^{3} × 1091
Composite numberω(n)  Distinct Factors  2  Total number of distinct prime factors 

Ω(n)  Total Factors  4  Total number of prime factors 
rad(n)  Radical  2182  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  0  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 8,728 is 2^{3} × 1091. Since it has a total of 4 prime factors, 8,728 is a composite number.
Divisors of 8728
8 divisors
τ(n)  Total Divisors  8  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  16380  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  7652  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  2047.5  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  93.423765713013  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  4.2627594627595  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 8,728 can be divided by 8 positive divisors (out of which 6 are even, and 2 are odd). The sum of these divisors (counting 8,728) is 16,380, the average is 204,7.5.
Other Arithmetic Functions (n = 8728)
φ(n)  Euler Totient  4360  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  2180  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 1092  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 4,360 positive integers (less than 8,728) that are coprime with 8,728. And there are approximately 1,092 prime numbers less than or equal to 8,728.
Divisibility of 8728
m  2  3  4  5  6  7  8  9 

n mod m  0  1  0  3  4  6  0  7 
The number 8,728 is divisible by 2, 4 and 8.
Classification of 8728
By Arithmetic functions
 Refactorable
 Deficient
Expressible via specific sums
 Polite
 Nonhypotenuse
Base conversion (8728)
Base  System  Value 

2  Binary  10001000011000 
3  Ternary  102222021 
4  Quaternary  2020120 
5  Quinary  234403 
6  Senary  104224 
8  Octal  21030 
10  Decimal  8728 
12  Duodecimal  5074 
16  Hexadecimal  2218 
20  Vigesimal  11g8 
36  Base36  6qg 
Basic calculations (n = 8728)
Multiplication
n×yn×2  17456 

n×3  26184 
n×4  34912 
n×5  43640 
Division
n÷yn÷2  4364.000 

n÷3  2909.333 
n÷4  2182.000 
n÷5  1745.600 
Exponentiation
n^{y}n^{2}  76177984 

n^{3}  664881444352 
n^{4}  5803085246304256 
n^{5}  50649328029743546368 
Nth Root
^{y}√n^{2}√n  93.423765713013 

^{3}√n  20.589141856839 
^{4}√n  9.6655970179298 
^{5}√n  6.1402060823877 
8728 as geometric shapes
Circle
Radius = nDiameter  17456 

Circumference  54839.641361063 
Area  239320194.89968 
Sphere
Radius = nVolume  2785048881445.9 

Surface area  957280779.59872 
Circumference  54839.641361063 
Square
Length = nPerimeter  34912 

Area  76177984 
Diagonal  12343.255972392 
Cube
Length = nSurface area  457067904 

Volume  664881444352 
Space diagonal  15117.339448461 
Equilateral Triangle
Length = nPerimeter  26184 

Area  32986034.676542 
Altitude  7558.6697242306 
Triangular Pyramid
Length = nSurface area  131944138.70617 

Volume  78357029664.401 
Height  7126.3821583372 
Cryptographic Hash Functions
md5  3b2acfe2e38102074656ed938abf4ac3 

sha1  a4f0251360aded90b433f72a4285b851c47dda25 
sha256  a95d67cec3543764f119ac4231c949085816cb7a7908f30a4526e7da65910980 
sha512  adead61175b2626e4cb26ef77ae0947f7ef6c6b19503fce158f78af576072c1f0e22c78fe9df7f2e89c78791c82a214f379bcea76a1476cb2dbbae14654ea878 
ripemd160  6f74182d942a0e52b2993929a5a91877adb69197 