21491755 (number)

21491755 is an odd 8-digits composite number following 21491754 and preceding 21491756. In scientific notation, it is written as 2.1491755 × 10^7. The sum of its digits is 34. It has a total of 5 prime factors and 24 positive divisors. There are 15668352 positive integers (up to 21491755) that are relatively prime to 21491755.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491755 × 10^7
Engineering notation 2.1491755 × 10^6

Prime Factorization of 21491755

Prime Factorization 29 × 5 × 19 × 29 × 269

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 741095
Product of the distinct prime numbers

The prime factorization of 21491755 is 29 × 5 × 19 × 29 × 269. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 5, 62, 34, 195, 410, 1310, 870, 86529, 89359, 341246, 975972, 9890616, 1078998, 45457495, 3628259, 699779703, 930934038, 5159579192, 6020198605

Basic calculations (n = 21491755)

Multiplication

n×y
n×2 42983510
n×3 64475265
n×4 85967020
n×5 107458775

Division

n÷y
n÷2 10745877.5
n÷3 7163918.3333333
n÷3 5372938.75
n÷5 4298351

Exponentiation

ny
n2 461895532980025
n3 9.9269456304011E+21
n4 2.133474833869E+29
n5 4.5852118428179E+36

Nth Root

y√n
2√n 4635.9200812784
3√n 278.02933889762
4√n 68.087591243033
5√n 29.272133437248

Divisors of 21491755

1, 5, 19, 29, 95, 145, 269, 551, 841, 1345, 2755, 4205, 5111, 7801, 15979, 25555, 39005, 79895, 148219, 226229, 741095, 1131145, 4298351, 21491755

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491754
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491755 can be divided by 24 positive divisors. The sum of these divisors (counting 21491755) is 1, the average is 0.041666666666667.

Base conversion 21491755

Base System Value
2 Binary 1010001111111000000101011
3 Ternary 1111102220010221
4 Quaternary 1101333000223
5 Quinary 21000214010
6 Senary 2044350511
8 Octal 121770053
10 Decimal 21491755
12 Duodecimal 7245437
16 Hexadecimal 147f02b
20 Vigesimal 6e697f
36 Base36 csn57

Cryptographic Hash Functions

md5 7246ebec80bc374846b125b5e2260f3e
sha1 8dfdda9f86d91c05ac29f2f985aa393180f11b97
sha256 132dcf3293d8ca51971f3c755db25fed49261139d5e5fbb194719bd70b251192
sha512 bb3622e0a08ea61485302a7c580930f38aa4d9c9b6794ebe7918efc22e7ac88ee15f7c36e483facf427d59c8fbb42fc0895f16eeade0e4d63844507b49174739
ripemd-160 22d589289017841e707a3199036bc2634dfc642e

21491755 as geometric shapes

Circle

Radius = n
Diameter 42983510
Circumference 135036679.2415
Area 1.451087613136E+15

Sphere

Radius = n
Volume 4.1581892620071E+22
Surface area 5.804350452544E+15
Circumference 135036679.2415

Square

Length = n
Perimeter 85967020
Area 461895532980025
Diagonal 30393931.4002

Cube

Length = n
Surface area 2771373197880150
Volume 9.9269456304011E+21
Space diagonal 37224811.603822

Equilateral Triangle

Length = n
Perimeter 64475265
Area 2.0000663272763E+14
Altitude 18612405.801911

Triangular Pyramid

Length = n
Surface area 2.0000663272763E+14
Volume 1.1699017619545E+21
Height 10131310.466733