21031818 (number)

21031818 is an even 8-digits composite number following 21031817 and preceding 21031819. In scientific notation, it is written as 2.1031818 × 10^7. The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors. There are 6979536 positive integers (up to 21031818) that are relatively prime to 21031818.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1031818 × 10^7
Engineering notation 2.1031818 × 10^6

Prime Factorization of 21031818

Prime Factorization 2 × 3 × 229 × 15307

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21031818
Product of the distinct prime numbers

The prime factorization of 21031818 is 2 × 3 × 229 × 15307. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 8, 59, 12, 954, 345, 3306, 1196, 42565, 98853, 192204, 299173, 2350713, 4216599, 32797424, 45150821, 207330528, 852517826, 2037710285, 3102153419

Basic calculations (n = 21031818)

Multiplication

n×y
n×2 42063636
n×3 63095454
n×4 84127272
n×5 105159090

Division

n÷y
n÷2 10515909
n÷3 7010606
n÷3 5257954.5
n÷5 4206363.6

Exponentiation

ny
n2 442337368385124
n3 9.3031590264749E+21
n4 1.9566234746988E+29
n5 4.1151348814392E+36

Nth Root

y√n
2√n 4586.0460093636
3√n 276.0316861332
4√n 67.720351515358
5√n 29.14575856321

Divisors of 21031818

1, 2, 3, 6, 229, 458, 687, 1374, 15307, 30614, 45921, 91842, 3505303, 7010606, 10515909, 21031818

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031817
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031818 can be divided by 16 positive divisors. The sum of these divisors (counting 21031818) is 1, the average is 0.0625.

Base conversion 21031818

Base System Value
2 Binary 1010000001110101110001010
3 Ternary 1110120112020020
4 Quaternary 1100032232022
5 Quinary 20341004233
6 Senary 2030441310
8 Octal 120165612
10 Decimal 21031818
12 Duodecimal 7063236
16 Hexadecimal 140eb8a
20 Vigesimal 6b8jai
36 Base36 cis96

Cryptographic Hash Functions

md5 e47732bc0aa0936696e52052f1a8e04d
sha1 33845bb5425b8a78fea6a7955a312692d6d91721
sha256 3a128b60c7d34f7efa9210503603f79585e682cf1e7db5315981f12862cb4af5
sha512 c6467cd3e1af46220cf88ea692feeea05e6e98dec779e72b36ec5c19d346ba3ba02d7958ceca628ad7dd43d7fddc69722e986b19629206ff58c00bd5707ad433
ripemd-160 1acf952fe607164a1f1393a628a8ded4b0467de8

21031818 as geometric shapes

Circle

Radius = n
Diameter 42063636
Circumference 132146809.84088
Area 1.3896438269269E+15

Sphere

Radius = n
Volume 3.8968981403668E+22
Surface area 5.5585753077078E+15
Circumference 132146809.84088

Square

Length = n
Perimeter 84127272
Area 442337368385124
Diagonal 29743482.256963

Cube

Length = n
Surface area 2654024210310744
Volume 9.3031590264749E+21
Space diagonal 36428177.351542

Equilateral Triangle

Length = n
Perimeter 63095454
Area 1.9153769903234E+14
Altitude 18214088.675771

Triangular Pyramid

Length = n
Surface area 1.9153769903234E+14
Volume 1.0963878056795E+21
Height 9914494.0856542