20155791 is an odd 8-digits composite number following 20155790
and preceding 20155792 . In scientific notation, it is written as 2.0155791 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 13334360 positive integers (up to 20155791) that are relatively prime to 20155791.
20155791 has 8 divisors, whose sum is 27080064
The reverse of 20155791 is 19755102
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million one hundred fifty-five thousand seven hundred ninety-one
Scientific notation
2.0155791 × 10^7
Engineering notation
2.0155791 × 10^6
Prime Factorization
3 × 131 × 51287
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20155791
Product of the distinct prime numbers
The prime factorization of 20155791 is 3 × 131 × 51287.
Since it has a total of 3 prime factors.
4 , 8 , 86 , 81 , 523 , 803 , 738 , 7222 , 68137 , 54461 , 787766 , 893606 , 1620231 , 459326 , 56571630 , 13065461 , 175335514 , 369474650 , 4403640188 , 7017787668
n×2
40311582
n×3
60467373
n×4
80623164
n×5
100778955
n÷2
10077895.5
n÷3
6718597
n÷3
5038947.75
n÷5
4031158.2
n2
406255910835681
n3
8.1884092313186E+21
n4
1.6504386508893E+29
n5
3.3265896505646E+36
2 √n
4489.5201302589
3 √n
272.14474256341
4 √n
67.003881456666
5 √n
28.898810639287
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
-20155790
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 20155791 can be divided by 8 positive divisors.
The sum of these divisors (counting 20155791) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100111000110110001111
3
Ternary
1101221000112210
4
Quaternary
1030320312033
5
Quinary
20124441131
6
Senary
2000001503
8
Octal
114706617
10
Decimal
20155791
12
Duodecimal
6900293
16
Hexadecimal
1338d8f
20
Vigesimal
65j99b
36
Base36
c00b3
md5
a2dfbb6b04be86d35eac6def9d0579b2
sha1
7c73307b23abaf6c927ad1d6d968c0cb55c2fa2e
sha256
4fbdda4e89f8ebcc81eeb50d7f3f9b3781b9ea586cff17c331834405eb0682e2
sha512
8ff240c6379324b33bfd4efe91e4d94684c2dcbfa93479fc433b97e08518ffec99bf3eeff8815c54d7b3be4c158bf3fb979ef91f4dbd3daacbeccad814514f9f
ripemd-160
e6dcd4474590b02e9d46878b90ac27eac3bad95a
Diameter
40311582
Circumference
126642569.86578
Area
1.2762905849588E+15
Volume
3.429952838093E+22
Surface area
5.1051623398352E+15
Circumference
126642569.86578
Perimeter
80623164
Area
406255910835681
Diagonal
28504592.992558
Surface area
2437535465014086
Volume
8.1884092313186E+21
Space diagonal
34910854.07874
Perimeter
60467373
Area
1.7591396961064E+14
Altitude
17455427.03937
Surface area
1.7591396961064E+14
Volume
9.6501328243265E+20
Height
9501530.9975192