21031808 (number)

21031808 is an even 8-digits composite number following 21031807 and preceding 21031809. In scientific notation, it is written as 2.1031808 × 10^7. The sum of its digits is 23. It has a total of 9 prime factors and 32 positive divisors. There are 9013248 positive integers (up to 21031808) that are relatively prime to 21031808.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand eight hundred eight

Notation

Scientific notation 2.1031808 × 10^7
Engineering notation 2.1031808 × 10^6

Prime Factorization of 21031808

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 23473

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 328622
Product of the distinct prime numbers

The prime factorization of 21031808 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 23473. Since it has a total of 9 prime factors.

Most popular turbo-numbers

4, 9, 90, 55, 296, 498, 1511, 9815, 50350, 82823, 285260, 607785, 4366429, 3727535, 38420715, 90360690, 234974529, 205571371, 4265283013, 66713569

Basic calculations (n = 21031808)

Multiplication

n×y
n×2 42063616
n×3 63095424
n×4 84127232
n×5 105159040

Division

n÷y
n÷2 10515904
n÷3 7010602.6666667
n÷3 5257952
n÷5 4206361.6

Exponentiation

ny
n2 442336947748864
n3 9.3031457563601E+21
n4 1.9566197534378E+29
n5 4.1151250983311E+36

Nth Root

y√n
2√n 4586.0449190997
3√n 276.03164238492
4√n 67.720343465606
5√n 29.145755791622

Divisors of 21031808

1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 896, 23473, 46946, 93892, 164311, 187784, 328622, 375568, 657244, 751136, 1314488, 1502272, 2628976, 3004544, 5257952, 10515904, 21031808

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031807
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031808 can be divided by 32 positive divisors. The sum of these divisors (counting 21031808) is 1, the average is 0.03125.

Base conversion 21031808

Base System Value
2 Binary 1010000001110101110000000
3 Ternary 1110120112012212
4 Quaternary 1100032232000
5 Quinary 20341004213
6 Senary 2030441252
8 Octal 120165600
10 Decimal 21031808
12 Duodecimal 7063228
16 Hexadecimal 140eb80
20 Vigesimal 6b8ja8
36 Base36 cis8w

Cryptographic Hash Functions

md5 9bc75edc0164d4e85c4aacb6a8b5d458
sha1 9b47a8b8eb652c1a013fcb9f71945c2af9fd39bd
sha256 b21794282b36112cf327b8a68265ef3923994189efc98b89115ca530ef2eb594
sha512 d93f1b2d8099a930713c2e9a71f6bcf97af194193597425fb65a705ddb5334afdf372c538d35803a0c7c7b686cb2917b61a61b1a2c30bc20cc3d29d8964f89ec
ripemd-160 f938026ad413d78b25778bab614fcfc1e402f34c

21031808 as geometric shapes

Circle

Radius = n
Diameter 42063616
Circumference 132146747.00902
Area 1.3896425054592E+15

Sphere

Radius = n
Volume 3.8968925817941E+22
Surface area 5.5585700218367E+15
Circumference 132146747.00902

Square

Length = n
Perimeter 84127232
Area 442336947748864
Diagonal 29743468.114827

Cube

Length = n
Surface area 2654021686493184
Volume 9.3031457563601E+21
Space diagonal 36428160.031034

Equilateral Triangle

Length = n
Perimeter 63095424
Area 1.9153751689149E+14
Altitude 18214080.015517

Triangular Pyramid

Length = n
Surface area 1.9153751689149E+14
Volume 1.0963862417815E+21
Height 9914489.371609