21102905 (number)

21102905 is an odd 8-digits composite number following 21102904 and preceding 21102906. In scientific notation, it is written as 2.1102905 × 10^7. The sum of its digits is 20. It has a total of 4 prime factors and 16 positive divisors. There are 16368000 positive integers (up to 21102905) that are relatively prime to 21102905.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred two thousand nine hundred five

Notation

Scientific notation 2.1102905 × 10^7
Engineering notation 2.1102905 × 10^6

Prime Factorization of 21102905

Prime Factorization 5 × 41 × 331 × 311

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21102905
Product of the distinct prime numbers

The prime factorization of 21102905 is 5 × 41 × 331 × 311. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 3, 23, 29, 334, 291, 7785, 7300, 85489, 28700, 363848, 597883, 2545443, 2043232, 23561403, 32399608, 46202583, 136281782, 1352206999, 1842908862

Basic calculations (n = 21102905)

Multiplication

n×y
n×2 42205810
n×3 63308715
n×4 84411620
n×5 105514525

Division

n÷y
n÷2 10551452.5
n÷3 7034301.6666667
n÷3 5275726.25
n÷5 4220581

Exponentiation

ny
n2 445332599439025
n3 9.3978115393648E+21
n4 1.9832112412312E+29
n5 4.1851518418634E+36

Nth Root

y√n
2√n 4593.7898297593
3√n 276.34232972267
4√n 67.777502386554
5√n 29.165434361468

Divisors of 21102905

1, 5, 41, 205, 311, 331, 1555, 1655, 12751, 13571, 63755, 67855, 102941, 514705, 4220581, 21102905

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21102904
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21102905 can be divided by 16 positive divisors. The sum of these divisors (counting 21102905) is 1, the average is 0.0625.

Base conversion 21102905

Base System Value
2 Binary 1010000100000000100111001
3 Ternary 1110201010202002
4 Quaternary 1100200010321
5 Quinary 20400243110
6 Senary 2032150345
8 Octal 120400471
10 Decimal 21102905
12 Duodecimal 70983b5
16 Hexadecimal 1420139
20 Vigesimal 6bhh55
36 Base36 ckb3t

Cryptographic Hash Functions

md5 46b87eada9c03a7ff58f7541e55ebe1f
sha1 868efd6adb2a4fd38ce237d71aeefceed8999e37
sha256 5981ae1995f6964f8942b4aac5dac25bb36c26f768333d32647bf0045543076e
sha512 dc842160ef86f2d8ffad4ac7264334eadbdab4c6ed841eeb37fdf5bad1c4280b0e402acc5fbcd4a18affe971e81dde81cf9491ca5451e5e3520f005add70fdfa
ripemd-160 268d85b3d9fc83dd7bc05b22d214e30651e2cf0f

21102905 as geometric shapes

Circle

Radius = n
Diameter 42205810
Circumference 132593462.63481
Area 1.3990536228017E+15

Sphere

Radius = n
Volume 3.936546092252E+22
Surface area 5.5962144912067E+15
Circumference 132593462.63481

Square

Length = n
Perimeter 84411620
Area 445332599439025
Diagonal 29844014.456471

Cube

Length = n
Surface area 2671995596634150
Volume 9.3978115393648E+21
Space diagonal 36551303.647299

Equilateral Triangle

Length = n
Perimeter 63308715
Area 1.9283467212378E+14
Altitude 18275651.82365

Triangular Pyramid

Length = n
Surface area 1.9283467212378E+14
Volume 1.1075427112997E+21
Height 9948004.8188237