21256913 (number)

21256913 is an odd 8-digits composite number following 21256912 and preceding 21256914. In scientific notation, it is written as 2.1256913 × 10^7. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 20523888 positive integers (up to 21256913) that are relatively prime to 21256913.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred fifty-six thousand nine hundred thirteen

Notation

Scientific notation 2.1256913 × 10^7
Engineering notation 2.1256913 × 10^6

Prime Factorization of 21256913

Prime Factorization 29 × 732997

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21256913
Product of the distinct prime numbers

The prime factorization of 21256913 is 29 × 732997. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 3, 28, 22, 102, 756, 592, 4966, 89848, 58094, 306811, 999270, 784069, 8753429, 13852879, 75846422, 209616472, 803930685, 5901214711, 1015443861

Basic calculations (n = 21256913)

Multiplication

n×y
n×2 42513826
n×3 63770739
n×4 85027652
n×5 106284565

Division

n÷y
n÷2 10628456.5
n÷3 7085637.6666667
n÷3 5314228.25
n÷5 4251382.6

Exponentiation

ny
n2 451856350289569
n3 9.6050711266029E+21
n4 2.0417416129701E+29
n5 4.3401123835385E+36

Nth Root

y√n
2√n 4610.5219878014
3√n 277.01294539108
4√n 67.900824647433
5√n 29.207880225895

Divisors of 21256913

1, 29, 732997, 21256913

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 -21256912
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 21256913 can be divided by 4 positive divisors. The sum of these divisors (counting 21256913) is 1, the average is 0.25.

Base conversion 21256913

Base System Value
2 Binary 1010001000101101011010001
3 Ternary 1110222222000002
4 Quaternary 1101011223101
5 Quinary 20420210123
6 Senary 2035335345
8 Octal 121055321
10 Decimal 21256913
12 Duodecimal 7151555
16 Hexadecimal 1445ad1
20 Vigesimal 6ch25d
36 Base36 cnlxt

Cryptographic Hash Functions

md5 67c6310dc848940e4fa91b919b1762b5
sha1 9eb7d3d6ee5c777a0195a73218126791b145b0df
sha256 2ce00efa377c817565c830dd7e688c29535b295c5fa14c00d9bc066366484c1d
sha512 f0bb1c24ad43b03a587af935e9ceb182ddc98d5c9c7bba7cc075086272ce0d9fe88bcc3c2bdf2d55e271f8343405922d974109564296056ba3d1a3da68d69c0b
ripemd-160 3b910a04cb1a79f404a52a675cd0b29c5a47c361

21256913 as geometric shapes

Circle

Radius = n
Diameter 42513826
Circumference 133561123.43759
Area 1.4195485905476E+15

Sphere

Radius = n
Volume 4.0233627851391E+22
Surface area 5.6781943621904E+15
Circumference 133561123.43759

Square

Length = n
Perimeter 85027652
Area 451856350289569
Diagonal 30061814.658785

Cube

Length = n
Surface area 2711138101737414
Volume 9.6050711266029E+21
Space diagonal 36818053.328071

Equilateral Triangle

Length = n
Perimeter 63770739
Area 1.9565953910604E+14
Altitude 18409026.664036

Triangular Pyramid

Length = n
Surface area 1.9565953910604E+14
Volume 1.1319684879E+21
Height 10020604.886262