21131647 is an odd 8-digits composite number following 21131646
and preceding 21131648 . In scientific notation, it is written as 2.1131647 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 21076936 positive integers (up to 21131647) that are relatively prime to 21131647.
21131647 has 4 divisors, whose sum is 21186360
The reverse of 21131647 is 74613112
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million one hundred thirty-one thousand six hundred forty-seven
Scientific notation
2.1131647 × 10^7
Engineering notation
2.1131647 × 10^6
Prime Factorization
389 × 54323
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21131647
Product of the distinct prime numbers
The prime factorization of 21131647 is 389 × 54323.
Since it has a total of 2 prime factors.
9 , 1 , 34 , 57 , 577 , 80 , 8327 , 654 , 88694 , 86165 , 411183 , 565982 , 5854550 , 3509596 , 44292796 , 654216 , 640563996 , 443321490 , 9309695709 , 2985924721
n×2
42263294
n×3
63394941
n×4
84526588
n×5
105658235
n÷2
10565823.5
n÷3
7043882.3333333
n÷3
5282911.75
n÷5
4226329.4
n2
446546504932609
n3
9.4362631113197E+21
n4
1.9940378106753E+29
n5
4.2137303119843E+36
2 √n
4596.9171191136
3 √n
276.46773154186
4 √n
67.800568722642
5 √n
29.173374657827
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
-21131646
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 21131647 can be divided by 4 positive divisors.
The sum of these divisors (counting 21131647) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100111000101111111
3
Ternary
1110202121011121
4
Quaternary
1100213011333
5
Quinary
20402203042
6
Senary
2032531411
8
Octal
120470577
10
Decimal
21131647
12
Duodecimal
70b0b67
16
Hexadecimal
142717f
20
Vigesimal
6c1927
36
Base36
ckxa7
md5
359a29ba311b06a65c7c051069e5ea2b
sha1
2dff90384ac34e68fbfa4205a31b404d95784f2b
sha256
c7bc4c02e29bc641b80db4069196f0929f13bb69a6c5ebd493662eabb9c76379
sha512
84df6a9a33baa5433e1754b7f9c201e24186087353629a7b44380255d3a6ed1d6aff0f116b61bc908fc6d30f5805a79e80785d4c97b2e59cc76d00fae36b3f67
ripemd-160
789a0957c0269c6671c744d5c7a9db951b3dd621
Diameter
42263294
Circumference
132774053.94691
Area
1.4028672193825E+15
Volume
3.9526526490483E+22
Surface area
5.6114688775299E+15
Circumference
132774053.94691
Perimeter
84526588
Area
446546504932609
Diagonal
29884661.782681
Surface area
2679279029595654
Volume
9.4362631113197E+21
Space diagonal
36601086.25161
Perimeter
63394941
Area
1.933603086214E+14
Altitude
18300543.125805
Surface area
1.933603086214E+14
Volume
1.1120742725124E+21
Height
9961553.9275602