21491288 (number)

21491288 is an even 8-digits composite number following 21491287 and preceding 21491289. In scientific notation, it is written as 2.1491288 × 10^7. The sum of its digits is 35. It has a total of 7 prime factors and 64 positive divisors. There are 8326656 positive integers (up to 21491288) that are relatively prime to 21491288.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand two hundred eighty-eight

Notation

Scientific notation 2.1491288 × 10^7
Engineering notation 2.1491288 × 10^6

Prime Factorization of 21491288

Prime Factorization 2 × 2 × 2 × 7 × 13 × 53 × 557

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5372822
Product of the distinct prime numbers

The prime factorization of 21491288 is 2 × 2 × 2 × 7 × 13 × 53 × 557. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491288)

Multiplication

n×y
n×2 42982576
n×3 64473864
n×4 85965152
n×5 107456440

Division

n÷y
n÷2 10745644
n÷3 7163762.6666667
n÷3 5372822
n÷5 4298257.6

Exponentiation

ny
n2 461875459898944
n3 9.9262985288207E+21
n4 2.1332894045686E+29
n5 4.5847136980933E+36

Nth Root

y√n
2√n 4635.869713441
3√n 278.02732509215
4√n 68.087221366722
5√n 29.272006223764

Divisors of 21491288

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491287
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491288 can be divided by 64 positive divisors. The sum of these divisors (counting 21491288) is 1, the average is 0.015625.

Base conversion 21491288

Base System Value
2 Binary 1010001111110111001011000
3 Ternary 1111102212111122
4 Quaternary 1101332321120
5 Quinary 21000210123
6 Senary 2044344412
8 Octal 121767130
10 Decimal 21491288
12 Duodecimal 7245108
16 Hexadecimal 147ee58
20 Vigesimal 6e6848
36 Base36 csms8

Cryptographic Hash Functions

md5 7e33fd0458a374269a95da0071a75df9
sha1 87cb80eede5abd4e5c3e7f69e1eaee01fffa1b51
sha256 bdc5d200ef3139f715c37dd11b4f97b893263588879e60de4ac04addd47a899b
sha512 21ef213418afa4083e53f17a3b04f343e65ed8f3ca3a1792cc4636f48d9841dc05cde7062734af42b35d5950e09353710e58489ab2535fe527cbc849a9fb5777
ripemd-160 2d61ee2e3df232f700ea386622397483c792061c

21491288 as geometric shapes

Circle

Radius = n
Diameter 42982576
Circumference 135033744.99396
Area 1.4510245516919E+15

Sphere

Radius = n
Volume 4.157918204731E+22
Surface area 5.8040982067677E+15
Circumference 135033744.99396

Square

Length = n
Perimeter 85965152
Area 461875459898944
Diagonal 30393270.962466

Cube

Length = n
Surface area 2771252759393664
Volume 9.9262985288207E+21
Space diagonal 37224002.736095

Equilateral Triangle

Length = n
Perimeter 64473864
Area 1.9999794082855E+14
Altitude 18612001.368048

Triangular Pyramid

Length = n
Surface area 1.9999794082855E+14
Volume 1.1698255003019E+21
Height 10131090.320822