21491255 (number)

21491255 is an odd 8-digits composite number following 21491254 and preceding 21491256. In scientific notation, it is written as 2.1491255 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 16936128 positive integers (up to 21491255) that are relatively prime to 21491255.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand two hundred fifty-five

Notation

Scientific notation 2.1491255 × 10^7
Engineering notation 2.1491255 × 10^6

Prime Factorization of 21491255

Prime Factorization 5 × 67 × 64153

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21491255
Product of the distinct prime numbers

The prime factorization of 21491255 is 5 × 67 × 64153. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 6, 28, 50, 998, 88, 2901, 9827, 84636, 17019, 254105, 88422, 3970138, 2957709, 49975006, 37964159, 228643295, 718557919, 9042247015, 9475416995

Basic calculations (n = 21491255)

Multiplication

n×y
n×2 42982510
n×3 64473765
n×4 85965020
n×5 107456275

Division

n÷y
n÷2 10745627.5
n÷3 7163751.6666667
n÷3 5372813.75
n÷5 4298251

Exponentiation

ny
n2 461874041475025
n3 9.9262528032203E+21
n4 2.1332763018847E+29
n5 4.5846784989262E+36

Nth Root

y√n
2√n 4635.866154237
3√n 278.02718278787
4√n 68.087195229624
5√n 29.271997234291

Divisors of 21491255

1, 5, 67, 335, 64153, 320765, 4298251, 21491255

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491254
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491255 can be divided by 8 positive divisors. The sum of these divisors (counting 21491255) is 1, the average is 0.125.

Base conversion 21491255

Base System Value
2 Binary 1010001111110111000110111
3 Ternary 1111102212110102
4 Quaternary 1101332320313
5 Quinary 21000210010
6 Senary 2044344315
8 Octal 121767067
10 Decimal 21491255
12 Duodecimal 724509b
16 Hexadecimal 147ee37
20 Vigesimal 6e682f
36 Base36 csmrb

Cryptographic Hash Functions

md5 bf2355b9850a7bf3d176530d4cc59287
sha1 788f7e415a955da8d6793e2c72a7f287630a8587
sha256 b5ff251d12bcdf47a904ecf2109dfcc6463752fab99d37c6313557607f3b7811
sha512 f8a143c7878a9fb00dbf7da53984c37ac008f9ebdcf8ec66692893a581a9c1d6d5721462d94d96c6438c8d256e872a13e40c0d2775e5492eacdf0f28eb9a0714
ripemd-160 a301fde2f83cc0a9790fb76b0127161129de1d55

21491255 as geometric shapes

Circle

Radius = n
Diameter 42982510
Circumference 135033537.64885
Area 1.4510200955818E+15

Sphere

Radius = n
Volume 4.1578990512363E+22
Surface area 5.8040803823271E+15
Circumference 135033537.64885

Square

Length = n
Perimeter 85965020
Area 461874041475025
Diagonal 30393224.293419

Cube

Length = n
Surface area 2771244248850150
Volume 9.9262528032203E+21
Space diagonal 37223945.578419

Equilateral Triangle

Length = n
Perimeter 64473765
Area 1.9999732663298E+14
Altitude 18611972.789209

Triangular Pyramid

Length = n
Surface area 1.9999732663298E+14
Volume 1.1698201114882E+21
Height 10131074.764473