21031538 (number)

21031538 is an even 8-digits composite number following 21031537 and preceding 21031539. In scientific notation, it is written as 2.1031538 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors. There are 9438000 positive integers (up to 21031538) that are relatively prime to 21031538.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1031538 × 10^7
Engineering notation 2.1031538 × 10^6

Prime Factorization of 21031538

Prime Factorization 2 × 11 × 79 × 12101

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21031538
Product of the distinct prime numbers

The prime factorization of 21031538 is 2 × 11 × 79 × 12101. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 6, 79, 49, 232, 354, 4234, 4677, 81885, 2481, 302523, 480179, 322344, 6860919, 97370005, 53708884, 198705599, 753292219, 6926167855, 1374190913

Basic calculations (n = 21031538)

Multiplication

n×y
n×2 42063076
n×3 63094614
n×4 84126152
n×5 105157690

Division

n÷y
n÷2 10515769
n÷3 7010512.6666667
n÷3 5257884.5
n÷5 4206307.6

Exponentiation

ny
n2 442325590645444
n3 9.3027874680321E+21
n4 1.9565192813984E+29
n5 4.1148609614463E+36

Nth Root

y√n
2√n 4586.0154818753
3√n 276.03046117624
4√n 67.72012612123
5√n 29.145680958356

Divisors of 21031538

1, 2, 11, 22, 79, 158, 869, 1738, 12101, 24202, 133111, 266222, 955979, 1911958, 10515769, 21031538

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 -21031537
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 21031538 can be divided by 16 positive divisors. The sum of these divisors (counting 21031538) is 1, the average is 0.0625.

Base conversion 21031538

Base System Value
2 Binary 1010000001110101001110010
3 Ternary 1110120111211212
4 Quaternary 1100032221302
5 Quinary 20341002123
6 Senary 2030440122
8 Octal 120165162
10 Decimal 21031538
12 Duodecimal 7063042
16 Hexadecimal 140ea72
20 Vigesimal 6b8igi
36 Base36 cis1e

Cryptographic Hash Functions

md5 3591f6d45fadbf64e598299f172b93c8
sha1 3091f1689fc383aff74ef2630b0e0e48e660af8c
sha256 9cd732ee89c60633331763efd980f6e19129ea6011b8c27796bd8e7bdd88d2b2
sha512 54c21a7faca856d79423bf24892434d619da54fc440f570418c1eec56109e8a09b650db02e67a2746bd7d67213281b75c9ca724b7938a4554ffef3b807ec40ee
ripemd-160 b5785bfab5125296831448c4cb6a86f583b87d74

21031538 as geometric shapes

Circle

Radius = n
Diameter 42063076
Circumference 132145050.54899
Area 1.3896068260665E+15

Sphere

Radius = n
Volume 3.8967425023302E+22
Surface area 5.558427304266E+15
Circumference 132145050.54899

Square

Length = n
Perimeter 84126152
Area 442325590645444
Diagonal 29743086.277165

Cube

Length = n
Surface area 2653953543872664
Volume 9.3027874680321E+21
Space diagonal 36427692.377316

Equilateral Triangle

Length = n
Perimeter 63094614
Area 1.9153259912146E+14
Altitude 18213846.188658

Triangular Pyramid

Length = n
Surface area 1.9153259912146E+14
Volume 1.0963440170971E+21
Height 9914362.0923884