21490831 (number)

21490831 is an odd 8-digits composite number following 21490830 and preceding 21490832. In scientific notation, it is written as 2.1490831 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 21481200 positive integers (up to 21490831) that are relatively prime to 21490831.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1490831 × 10^7
Engineering notation 2.1490831 × 10^6

Prime Factorization of 21490831

Prime Factorization 3511 × 6121

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21490831
Product of the distinct prime numbers

The prime factorization of 21490831 is 3511 × 6121. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 10, 100, 55, 857, 871, 1248, 2940, 77788, 87617, 855011, 37179, 3076734, 9012433, 92801589, 1692621, 401850797, 81774933, 4258295700, 5000087966

Basic calculations (n = 21490831)

Multiplication

n×y
n×2 42981662
n×3 64472493
n×4 85963324
n×5 107454155

Division

n÷y
n÷2 10745415.5
n÷3 7163610.3333333
n÷3 5372707.75
n÷5 4298166.2

Exponentiation

ny
n2 461855817070561
n3 9.9256653110303E+21
n4 2.1331079576192E+29
n5 4.5842262621948E+36

Nth Root

y√n
2√n 4635.8204236144
3√n 278.0253543806
4√n 68.086859404839
5√n 29.271881732197

Divisors of 21490831

1, 3511, 6121, 21490831

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21490830
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21490831 can be divided by 4 positive divisors. The sum of these divisors (counting 21490831) is 1, the average is 0.25.

Base conversion 21490831

Base System Value
2 Binary 1010001111110110010001111
3 Ternary 1111102211212201
4 Quaternary 1101332302033
5 Quinary 21000201311
6 Senary 2044342331
8 Octal 121766217
10 Decimal 21490831
12 Duodecimal 72449a7
16 Hexadecimal 147ec8f
20 Vigesimal 6e671b
36 Base36 csmfj

Cryptographic Hash Functions

md5 56e66997520b47e4b2c682230b28367e
sha1 67ae85d655ed8c3dcdeccdb99e5ddf3769170f10
sha256 d914c1adf585921208caa50f68fcaf68b7ccd8f22424e6519246f5bdc3f1a571
sha512 1b7f66c2edc74e84690676bce87d21bdf42ff1f528aa15a1a885f15c6c588245f08ea52856539bd332f18ebc7c1e7b90c6ca497843d92bffe6618bdfba915e46
ripemd-160 b9edafc1defd7a0810c90fd31251d8630925d46c

21490831 as geometric shapes

Circle

Radius = n
Diameter 42981662
Circumference 135030873.57828
Area 1.4509628419266E+15

Sphere

Radius = n
Volume 4.1576529630832E+22
Surface area 5.8038513677063E+15
Circumference 135030873.57828

Square

Length = n
Perimeter 85963324
Area 461855817070561
Diagonal 30392624.666868

Cube

Length = n
Surface area 2771134902423366
Volume 9.9256653110303E+21
Space diagonal 37223211.188876

Equilateral Triangle

Length = n
Perimeter 64472493
Area 1.9998943523436E+14
Altitude 18611605.594438

Triangular Pyramid

Length = n
Surface area 1.9998943523436E+14
Volume 1.1697508748696E+21
Height 10130874.888956