21539985 (number)

21539985 is an odd 8-digits composite number following 21539984 and preceding 21539986. In scientific notation, it is written as 2.1539985 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 11456640 positive integers (up to 21539985) that are relatively prime to 21539985.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1539985 × 10^7
Engineering notation 2.1539985 × 10^6

Prime Factorization of 21539985

Prime Factorization 15 × 409 × 3511

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21539985
Product of the distinct prime numbers

The prime factorization of 21539985 is 15 × 409 × 3511. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 3, 28, 6, 98, 381, 907, 5203, 588, 80981, 5614, 203298, 2044494, 8166781, 79812131, 66239159, 220167975, 996883092, 9078647989, 7708749848

Basic calculations (n = 21539985)

Multiplication

n×y
n×2 43079970
n×3 64619955
n×4 86159940
n×5 107699925

Division

n÷y
n÷2 10769992.5
n÷3 7179995
n÷3 5384996.25
n÷5 4307997

Exponentiation

ny
n2 463970953800225
n3 9.9939273852925E+21
n4 2.1526904597029E+29
n5 4.6368920211644E+36

Nth Root

y√n
2√n 4641.1189383596
3√n 278.23716025026
4√n 68.12575825897
5√n 29.285259674788

Divisors of 21539985

1, 15, 409, 3511, 6135, 52665, 1435999, 21539985

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21539984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21539985 can be divided by 8 positive divisors. The sum of these divisors (counting 21539985) is 1, the average is 0.125.

Base conversion 21539985

Base System Value
2 Binary 1010010001010110010010001
3 Ternary 1111112100022020
4 Quaternary 1102022302101
5 Quinary 21003234420
6 Senary 2045402053
8 Octal 122126221
10 Decimal 21539985
12 Duodecimal 7269329
16 Hexadecimal 148ac91
20 Vigesimal 6ec9j5
36 Base36 ctocx

Cryptographic Hash Functions

md5 191394661666f93e03fe23b0a52e005b
sha1 b9cbf2e853220c18869299ee0f4cd94b73ffe7b0
sha256 4c5efa0277893d39e1b9c96715ab776315afa4a4b6c2499b473b65adf5e75e40
sha512 1083d73e3df3d66568b2a6a8731d24aa69694f07e5b2671047f1f8460896415a3bbeb3dda95bbfe7ca7162cf1036ce5f14f70f320e4f1a8c953006b0c5e667e8
ripemd-160 3d77c5518723cd4975a844e44df84c9008e1d72c

21539985 as geometric shapes

Circle

Radius = n
Diameter 43079970
Circumference 135339717.26887
Area 1.4576077399378E+15

Sphere

Radius = n
Volume 4.186246513886E+22
Surface area 5.8304309597513E+15
Circumference 135339717.26887

Square

Length = n
Perimeter 86159940
Area 463970953800225
Diagonal 30462138.920313

Cube

Length = n
Surface area 2783825722801350
Volume 9.9939273852925E+21
Space diagonal 37308348.414272

Equilateral Triangle

Length = n
Perimeter 64619955
Area 2.0090531630455E+14
Altitude 18654174.207136

Triangular Pyramid

Length = n
Surface area 2.0090531630455E+14
Volume 1.177795637471E+21
Height 10154046.306771