21931921 (number)

21931921 is an odd 8-digits composite number following 21931920 and preceding 21931922. In scientific notation, it is written as 2.1931921 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 12 positive divisors. There are 18762560 positive integers (up to 21931921) that are relatively prime to 21931921.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred thirty-one thousand nine hundred twenty-one

Notation

Scientific notation 2.1931921 × 10^7
Engineering notation 2.1931921 × 10^6

Prime Factorization of 21931921

Prime Factorization 11 × 17 × 17 × 6899

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1290113
Product of the distinct prime numbers

The prime factorization of 21931921 is 11 × 17 × 17 × 6899. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 5, 28, 12, 423, 735, 9156, 4780, 56578, 29296, 781703, 663243, 4550743, 993896, 18873599, 55446883, 537713339, 335029937, 8494422040, 7355026580

Basic calculations (n = 21931921)

Multiplication

n×y
n×2 43863842
n×3 65795763
n×4 87727684
n×5 109659605

Division

n÷y
n÷2 10965960.5
n÷3 7310640.3333333
n÷3 5482980.25
n÷5 4386384.2

Exponentiation

ny
n2 481009158750241
n3 1.0549454869987E+22
n4 2.3136981080161E+29
n5 5.074384412286E+36

Nth Root

y√n
2√n 4683.1528909486
3√n 279.91460406017
4√n 68.433565528537
5√n 29.391065767161

Divisors of 21931921

1, 11, 17, 187, 289, 3179, 6899, 75889, 117283, 1290113, 1993811, 21931921

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21931920
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21931921 can be divided by 12 positive divisors. The sum of these divisors (counting 21931921) is 1, the average is 0.083333333333333.

Base conversion 21931921

Base System Value
2 Binary 1010011101010011110010001
3 Ternary 1112021020221101
4 Quaternary 1103222132101
5 Quinary 21103310141
6 Senary 2102024401
8 Octal 123523621
10 Decimal 21931921
12 Duodecimal 7418101
16 Hexadecimal 14ea791
20 Vigesimal 6h19g1
36 Base36 d22s1

Cryptographic Hash Functions

md5 31ee96e30b55af397b93552ec92c1301
sha1 f05f8a49c5093e6ea7dc2acc82c4224b54112695
sha256 9bb51465fcc42dcff4f9dfb6f6155151c6a5a7ce7ae6a80c094637bb10b3f7bb
sha512 268259ba6c2ab570718e0dc1b0f97bf54a82e726623147ab8bd4a03b2b21b5c63e04e031e7130a266f485a3e44ed3fd731ddca2fe8dd13c5aea5217e28f418dc
ripemd-160 b21fb3213e1b8a40c4f9bd3350899c17eb2af1dd

21931921 as geometric shapes

Circle

Radius = n
Diameter 43863842
Circumference 137802323.78542
Area 1.5111348394392E+15

Sphere

Radius = n
Volume 4.4189453225237E+22
Surface area 6.0445393577567E+15
Circumference 137802323.78542

Square

Length = n
Perimeter 87727684
Area 481009158750241
Diagonal 31016420.127095

Cube

Length = n
Surface area 2886054952501446
Volume 1.0549454869987E+22
Space diagonal 37987201.479587

Equilateral Triangle

Length = n
Perimeter 65795763
Area 2.0828307546535E+14
Altitude 18993600.739793

Triangular Pyramid

Length = n
Surface area 2.0828307546535E+14
Volume 1.2432651793982E+21
Height 10338806.709032