21129715 is an odd 8-digits composite number following 21129714
and preceding 21129716 . In scientific notation, it is written as 2.1129715 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 16903768 positive integers (up to 21129715) that are relatively prime to 21129715.
21129715 has 4 divisors, whose sum is 25355664
The reverse of 21129715 is 51792112
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million one hundred twenty-nine thousand seven hundred fifteen
Scientific notation
2.1129715 × 10^7
Engineering notation
2.1129715 × 10^6
Prime Factorization
5 × 4225943
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21129715
Product of the distinct prime numbers
The prime factorization of 21129715 is 5 × 4225943.
Since it has a total of 2 prime factors.
4 , 9 , 47 , 39 , 809 , 594 , 4846 , 6003 , 72089 , 57855 , 85836 , 626123 , 9813436 , 2872658 , 75205883 , 81834638 , 901834561 , 9118070 , 4854796909 , 8401993317
n×2
42259430
n×3
63389145
n×4
84518860
n×5
105648575
n÷2
10564857.5
n÷3
7043238.3333333
n÷3
5282428.75
n÷5
4225943
n2
446464855981225
n3
9.4336751643993E+21
n4
1.9933086762634E+29
n5
4.2118044236472E+36
2 √n
4596.7069734757
3 √n
276.45930576012
4 √n
67.799018971337
5 √n
29.172841192346
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
-21129714
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 21129715 can be divided by 4 positive divisors.
The sum of these divisors (counting 21129715) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100110100111110011
3
Ternary
1110202111112001
4
Quaternary
1100212213303
5
Quinary
20402122330
6
Senary
2032514431
8
Octal
120464763
10
Decimal
21129715
12
Duodecimal
70aba17
16
Hexadecimal
14269f3
20
Vigesimal
6c145f
36
Base36
ckvsj
md5
6a8e0a2127589fdbb1af54faa0bd40e2
sha1
ee3b6c04d9f0d6ab0b51a668fd3316c26c2245ca
sha256
e9eefabdd52e64e8760f30326f0a26ceaba8dcab4a436dbf01697f2d4f444a0c
sha512
ab97eddaab737dfccb9aa9a6072d909976a30cbe1b655ab1322af983b42b9054f19b081c27af9db1cdee314bcd6450f1d53c743b6a1ac983c410fd37b1059f3e
ripemd-160
f7b2091ecf10a6051a7bd5fdadd87a6dd83d2810
Diameter
42259430
Circumference
132761914.83289
Area
1.4026107116366E+15
Volume
3.9515686123773E+22
Surface area
5.6104428465466E+15
Circumference
132761914.83289
Perimeter
84518860
Area
446464855981225
Diagonal
29881929.522078
Surface area
2678789135887350
Volume
9.4336751643993E+21
Space diagonal
36597739.92945
Perimeter
63389145
Area
1.9332495358835E+14
Altitude
18298869.964725
Surface area
1.9332495358835E+14
Volume
1.111769280043E+21
Height
9960643.1740261