21031388 (number)

21031388 is an even 8-digits composite number following 21031387 and preceding 21031389. In scientific notation, it is written as 2.1031388 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 12 positive divisors. There are 9012864 positive integers (up to 21031388) that are relatively prime to 21031388.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1031388 × 10^7
Engineering notation 2.1031388 × 10^6

Prime Factorization of 21031388

Prime Factorization 2 × 2 × 343 × 15329

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10515694
Product of the distinct prime numbers

The prime factorization of 21031388 is 2 × 2 × 343 × 15329. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 4, 83, 97, 43, 78, 4847, 1090, 28936, 28344, 598475, 716032, 761172, 4975724, 43069265, 83591749, 893299189, 630988636, 7904559382, 5697292751

Basic calculations (n = 21031388)

Multiplication

n×y
n×2 42062776
n×3 63094164
n×4 84125552
n×5 105156940

Division

n÷y
n÷2 10515694
n÷3 7010462.6666667
n÷3 5257847
n÷5 4206277.6

Exponentiation

ny
n2 442319281206544
n3 9.3025884229359E+21
n4 1.9564634652707E+29
n5 4.1147142245933E+36

Nth Root

y√n
2√n 4585.9991277801
3√n 276.02980494483
4√n 67.72000537345
5√n 29.145639383987

Divisors of 21031388

1, 2, 4, 343, 686, 1372, 15329, 30658, 61316, 5257847, 10515694, 21031388

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 -21031387
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 21031388 can be divided by 12 positive divisors. The sum of these divisors (counting 21031388) is 1, the average is 0.083333333333333.

Base conversion 21031388

Base System Value
2 Binary 1010000001110100111011100
3 Ternary 1110120111122022
4 Quaternary 1100032213130
5 Quinary 20341001023
6 Senary 2030435312
8 Octal 120164734
10 Decimal 21031388
12 Duodecimal 7062b38
16 Hexadecimal 140e9dc
20 Vigesimal 6b8i98
36 Base36 cirx8

Cryptographic Hash Functions

md5 01305ea40a2f081c439496b720afba1c
sha1 f0aa9e83614703a4b4d0d298ba18d691f3ac189d
sha256 7a35875be2ac8776819dfdc2fce5ef4e8150fbcb4e48a5b16d429e95c87e1384
sha512 e3cac861b2ca5f64c9a0df98b1bb9f17d3bcd1973b788f4e889c14c990ad90629e10f91573d7ac681478bd96b77f563683e1a1b34bab1b938d53a1cc094d7253
ripemd-160 4fd45891b7f8c8226cee1158200c0ddef19a5c48

21031388 as geometric shapes

Circle

Radius = n
Diameter 42062776
Circumference 132144108.07119
Area 1.3895870043796E+15

Sphere

Radius = n
Volume 3.8966591265153E+22
Surface area 5.5583480175184E+15
Circumference 132144108.07119

Square

Length = n
Perimeter 84125552
Area 442319281206544
Diagonal 29742874.145131

Cube

Length = n
Surface area 2653915687239264
Volume 9.3025884229359E+21
Space diagonal 36427432.569694

Equilateral Triangle

Length = n
Perimeter 63094164
Area 1.9152986705427E+14
Altitude 18213716.284847

Triangular Pyramid

Length = n
Surface area 1.9152986705427E+14
Volume 1.0963205594076E+21
Height 9914291.3817103