21956 (number)

21956 is an even 5-digits composite number following 21955 and preceding 21957. In scientific notation, it is written as 2.1956 × 10^4. The sum of its digits is 23. It has a total of 4 prime factors and 12 positive divisors. There are 9960 positive integers (up to 21956) that are relatively prime to 21956.

Interesting facts

Basic properties

Name

Name twenty-one thousand nine hundred fifty-six

Notation

Scientific notation 2.1956 × 10^4
Engineering notation 2.1956 × 10^3

Prime Factorization of 21956

Prime Factorization 2 × 2 × 11 × 499

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10978
Product of the distinct prime numbers

The prime factorization of 21956 is 2 × 2 × 11 × 499. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 4, 71, 71, 438, 351, 6250, 8199, 5353, 76242, 465094, 257130, 4486527, 3404921, 34906178, 54072206, 961930684, 931014949, 5449035161, 4480735926

Basic calculations (n = 21956)

Multiplication

n×y
n×2 43912
n×3 65868
n×4 87824
n×5 109780

Division

n÷y
n÷2 10978
n÷3 7318.6666666667
n÷3 5489
n÷5 4391.2

Exponentiation

ny
n2 482065936
n3 10584239690816
n4 232387566651556096
n5 5.1023014134016E+21

Nth Root

y√n
2√n 148.17557153593
3√n 28.001700576986
4√n 12.172738867483
5√n 7.3843223092816

Divisors of 21956

1, 2, 4, 11, 22, 44, 499, 998, 1996, 5489, 10978, 21956

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21955
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21956 can be divided by 12 positive divisors. The sum of these divisors (counting 21956) is 1, the average is 0.083333333333333.

Base conversion 21956

Base System Value
2 Binary 101010111000100
3 Ternary 1010010012
4 Quaternary 11113010
5 Quinary 1200311
6 Senary 245352
8 Octal 52704
10 Decimal 21956
12 Duodecimal 10858
16 Hexadecimal 55c4
20 Vigesimal 2ehg
36 Base36 gxw

Cryptographic Hash Functions

md5 d91f7910cd3924264d0a7732a94a624b
sha1 89637976a3c79b97850af4c43f3e49935f77a2ce
sha256 48b1299cc62c53fd9ffd2ee68c17400f1ff35d7b70a6ded7b3460deb3a2bf2fd
sha512 490618483ece79999f427826d1aa2fe27e2b816faff6454b0c208b31e0c88091ee7f3ecc6ce0a7e2a66241d86ba5d5cbcd268d682e06f96a2d02ac54be7ba8ac
ripemd-160 5def93dba5ef28d6506224a374158f0cbf81ffb1

21956 as geometric shapes

Circle

Radius = n
Diameter 43912
Circumference 137953.61660443
Area 1514454803.0835

Sphere

Radius = n
Volume 44335159542001
Surface area 6057819212.3339
Circumference 137953.61660443

Square

Length = n
Perimeter 87824
Area 482065936
Diagonal 31050.472975464

Cube

Length = n
Surface area 2892395616
Volume 10584239690816
Space diagonal 38028.907530982

Equilateral Triangle

Length = n
Perimeter 65868
Area 208740673.43756
Altitude 19014.453765491

Triangular Pyramid

Length = n
Surface area 208740673.43756
Volume 1247364609846.6
Height 10350.157658488