21539931 (number)

21539931 is an odd 8-digits composite number following 21539930 and preceding 21539932. In scientific notation, it is written as 2.1539931 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 12269088 positive integers (up to 21539931) that are relatively prime to 21539931.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1539931 × 10^7
Engineering notation 2.1539931 × 10^6

Prime Factorization of 21539931

Prime Factorization 7 × 3 × 2939 × 349

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21539931
Product of the distinct prime numbers

The prime factorization of 21539931 is 7 × 3 × 2939 × 349. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 7, 9, 56, 761, 334, 5192, 6995, 8258, 29877, 434421, 850815, 8152983, 6021379, 6692998, 53924195, 822351406, 773343314, 3611650249, 577301642

Basic calculations (n = 21539931)

Multiplication

n×y
n×2 43079862
n×3 64619793
n×4 86159724
n×5 107699655

Division

n÷y
n÷2 10769965.5
n÷3 7179977
n÷3 5384982.75
n÷5 4307986.2

Exponentiation

ny
n2 463968627484761
n3 9.9938522221865E+21
n4 2.1526688729009E+29
n5 4.6368338988134E+36

Nth Root

y√n
2√n 4641.1131207933
3√n 278.23692773975
4√n 68.125715561698
5√n 29.285244991346

Divisors of 21539931

1, 3, 7, 21, 349, 1047, 2443, 2939, 7329, 8817, 20573, 61719, 1025711, 3077133, 7179977, 21539931

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 -21539930
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 21539931 can be divided by 16 positive divisors. The sum of these divisors (counting 21539931) is 1, the average is 0.0625.

Base conversion 21539931

Base System Value
2 Binary 1010010001010110001011011
3 Ternary 1111112100020020
4 Quaternary 1102022301123
5 Quinary 21003234211
6 Senary 2045401523
8 Octal 122126133
10 Decimal 21539931
12 Duodecimal 72692a3
16 Hexadecimal 148ac5b
20 Vigesimal 6ec9gb
36 Base36 ctobf

Cryptographic Hash Functions

md5 d9e77580d5b5ec79a8e14cad494f3e81
sha1 2d569d22705ed42c163b12cbbc8ed73c2c74da73
sha256 0c27551045ddd1be2bf9164a086b2eb106a1e3ff902bff2c38b12f9cb0c5ab91
sha512 b24d044bef02794f0c607fb76ae5b2c6162de7a02638ab344f7b2592c9c5b0a4d4c80714c1d3a7fa8a27b4a03f929f8e7518f25d0045ce38a589d1b497a26afd
ripemd-160 588c30114dd96b8814600906f8e67e3188285fce

21539931 as geometric shapes

Circle

Radius = n
Diameter 43079862
Circumference 135339377.97686
Area 1.4576004316023E+15

Sphere

Radius = n
Volume 4.1862150296377E+22
Surface area 5.8304017264091E+15
Circumference 135339377.97686

Square

Length = n
Perimeter 86159724
Area 463968627484761
Diagonal 30462062.552781

Cube

Length = n
Surface area 2783811764908566
Volume 9.9938522221865E+21
Space diagonal 37308254.883528

Equilateral Triangle

Length = n
Perimeter 64619793
Area 2.009043089804E+14
Altitude 18654127.441764

Triangular Pyramid

Length = n
Surface area 2.009043089804E+14
Volume 1.177786779414E+21
Height 10154020.850927