21132981 (number)

21132981 is an odd 8-digits composite number following 21132980 and preceding 21132982. In scientific notation, it is written as 2.1132981 × 10^7. The sum of its digits is 27. It has a total of 6 prime factors and 18 positive divisors. There are 14084280 positive integers (up to 21132981) that are relatively prime to 21132981.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-two thousand nine hundred eighty-one

Notation

Scientific notation 2.1132981 × 10^7
Engineering notation 2.1132981 × 10^6

Prime Factorization of 21132981

Prime Factorization 3 × 9 × 3 × 9 × 9 × 3221

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 86967
Product of the distinct prime numbers

The prime factorization of 21132981 is 3 × 9 × 3 × 9 × 9 × 3221. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 9, 80, 55, 925, 928, 1703, 6225, 12386, 71632, 929257, 45499, 4525606, 7066713, 63196473, 49553427, 528547755, 489126125, 7069469070, 1089641622

Basic calculations (n = 21132981)

Multiplication

n×y
n×2 42265962
n×3 63398943
n×4 84531924
n×5 105664905

Division

n÷y
n÷2 10566490.5
n÷3 7044327
n÷3 5283245.25
n÷5 4226596.2

Exponentiation

ny
n2 446602885946361
n3 9.4380503032496E+21
n4 1.9945413773562E+29
n5 4.2150605031382E+36

Nth Root

y√n
2√n 4597.0622140667
3√n 276.47354904382
4√n 67.801638727001
5√n 29.173742980269

Divisors of 21132981

1, 3, 9, 27, 81, 243, 729, 2187, 3221, 6561, 9663, 28989, 86967, 260901, 782703, 2348109, 7044327, 21132981

18 divisors

τ Total Divisors 18
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21132980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.055555555555556
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 18
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21132981 can be divided by 18 positive divisors. The sum of these divisors (counting 21132981) is 1, the average is 0.055555555555556.

Base conversion 21132981

Base System Value
2 Binary 1010000100111011010110101
3 Ternary 1110202200000000
4 Quaternary 1100213122311
5 Quinary 20402223411
6 Senary 2032541513
8 Octal 120473265
10 Decimal 21132981
12 Duodecimal 70b1899
16 Hexadecimal 14276b5
20 Vigesimal 6c1c91
36 Base36 ckyb9

Cryptographic Hash Functions

md5 63f33414995c13a1e1d3e618dd85237f
sha1 70801c54a31d12f0acbc1518b6cf3bb55d710382
sha256 f5c6a85076653b89c725968096c1ccbb73454dd1f28ed81608245dd688192c55
sha512 0c49c5c1d9c7196fd29af52077256dca044d056f8270770273baa6552a0af4a701beb325500835b24c5f8b6aea07fbb222ae01e347fb19e5b0e808396cd7867e
ripemd-160 6cc3a08de94d1dc91473867fdeb90087df6871e9

21132981 as geometric shapes

Circle

Radius = n
Diameter 42265962
Circumference 132782435.71611
Area 1.4030443455611E+15

Sphere

Radius = n
Volume 3.9534012662533E+22
Surface area 5.6121773822444E+15
Circumference 132782435.71611

Square

Length = n
Perimeter 84531924
Area 446602885946361
Diagonal 29886548.343573

Cube

Length = n
Surface area 2679617315678166
Volume 9.4380503032496E+21
Space diagonal 36603396.807388

Equilateral Triangle

Length = n
Perimeter 63398943
Area 1.933847223165E+14
Altitude 18301698.403694

Triangular Pyramid

Length = n
Surface area 1.933847223165E+14
Volume 1.1122848951013E+21
Height 9962182.781191