20921539 is an odd 8-digits composite number following 20921538
and preceding 20921540 . In scientific notation, it is written as 2.0921539 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 20225376 positive integers (up to 20921539) that are relatively prime to 20921539.
20921539 has 8 divisors, whose sum is 21625040
The reverse of 20921539 is 93512902
Previous prime number is 163
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million nine hundred twenty-one thousand five hundred thirty-nine
Scientific notation
2.0921539 × 10^7
Engineering notation
2.0921539 × 10^6
Prime Factorization
37 × 163 × 3469
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921539
Product of the distinct prime numbers
The prime factorization of 20921539 is 37 × 163 × 3469.
Since it has a total of 3 prime factors.
9 , 4 , 38 , 74 , 575 , 430 , 7763 , 6809 , 26659 , 55221 , 890207 , 324554 , 3613892 , 431373 , 24977031 , 38456628 , 633815243 , 297385149 , 9936366234 , 2300714520
n×2
41843078
n×3
62764617
n×4
83686156
n×5
104607695
n÷2
10460769.5
n÷3
6973846.3333333
n÷3
5230384.75
n÷5
4184307.8
n2
437710794128521
n3
9.1575834500808E+21
n4
1.9159073929662E+29
n5
4.0083731242331E+36
2 √n
4574.006886746
3 √n
275.54838890363
4 √n
67.631404589481
5 √n
29.115129468726
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
-20921538
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 20921539 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921539) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011110011000011
3
Ternary
1110100220221211
4
Quaternary
1033303303003
5
Quinary
20323442124
6
Senary
2024230551
8
Octal
117636303
10
Decimal
20921539
12
Duodecimal
700b457
16
Hexadecimal
13f3cc3
20
Vigesimal
6af3gj
36
Base36
cgf5v
md5
4523e03e124d7617bedaa208fa54e1d8
sha1
8666e36e8f930465b58baf59a79a9805bae62397
sha256
3127f06aa704c46b655f5ac3fe94ca8afd6bef5e8354d2398fc9b57cdd741050
sha512
b5ecab47a064b75e4b5f884f3a2497ae2095b514ee8db449912f641db08529fac18288c9318de28f089dc1327b7eb757d1a501843908cd05f9f5a87a6ab8839f
ripemd-160
4d07ade4f0d489e93a3cd62e3e74bfc3d8d447ea
Diameter
41843078
Circumference
131453906.44838
Area
1.3751090152311E+15
Volume
3.8359195855213E+22
Surface area
5.5004360609245E+15
Circumference
131453906.44838
Perimeter
83686156
Area
437710794128521
Diagonal
29587524.199518
Surface area
2626264764771126
Volume
9.1575834500808E+21
Space diagonal
36237168.520534
Perimeter
62764617
Area
1.8953433361298E+14
Altitude
18118584.260267
Surface area
1.8953433361298E+14
Volume
1.0792315594723E+21
Height
9862508.0665059