20397791 is an odd 8-digits composite number following 20397790
and preceding 20397792 . In scientific notation, it is written as 2.0397791 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 20325432 positive integers (up to 20397791) that are relatively prime to 20397791.
20397791 has 4 divisors, whose sum is 20470152
The reverse of 20397791 is 19779302
Previous prime number is 283
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty million three hundred ninety-seven thousand seven hundred ninety-one
Scientific notation
2.0397791 × 10^7
Engineering notation
2.0397791 × 10^6
Prime Factorization
283 × 72077
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20397791
Product of the distinct prime numbers
The prime factorization of 20397791 is 283 × 72077.
Since it has a total of 2 prime factors.
8 , 8 , 39 , 24 , 125 , 244 , 4156 , 4804 , 32091 , 85047 , 998291 , 414313 , 3336883 , 3419089 , 89010701 , 78062099 , 761502580 , 117116055 , 3408692023 , 2699148732
n×2
40795582
n×3
61193373
n×4
81591164
n×5
101988955
n÷2
10198895.5
n÷3
6799263.6666667
n÷3
5099447.75
n÷5
4079558.2
n2
416069877679681
n3
8.4869064063057E+21
n4
1.7311414311238E+29
n5
3.5311461103505E+36
2 √n
4516.3913692239
3 √n
273.2295787383
4 √n
67.204102324366
5 √n
28.967874315773
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
-20397790
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 20397791 can be divided by 4 positive divisors.
The sum of these divisors (counting 20397791) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101110011111011011111
3
Ternary
1102101022111202
4
Quaternary
1031303323133
5
Quinary
20210212131
6
Senary
2005110115
8
Octal
115637337
10
Decimal
20397791
12
Duodecimal
69b833b
16
Hexadecimal
1373edf
20
Vigesimal
679e9b
36
Base36
c571b
md5
3ddcb25e7d583d5ef1c5dcbe5e5ca91a
sha1
4fbdbc6840efc7756f717c0ba4e2e73d2b9d5ba1
sha256
8d43071c626462f56cf4c897484a847746f65dffa83073a5dd3b83120010a8c7
sha512
b83667e90cd4e12aa3d042071842d2aa969768ca5e53fe48c5cd202f14ae66e27bf0d6447c3d3b8fae0c6b76b4d67ca21a63a1b09e74f56b61cc6b96ada0798b
ripemd-160
3a5c0a5614526af04e46685921166d57a34f527a
Diameter
40795582
Circumference
128163100.71012
Area
1.3071220710985E+15
Volume
3.5549870423672E+22
Surface area
5.228488284394E+15
Circumference
128163100.71012
Perimeter
81591164
Area
416069877679681
Diagonal
28846832.674652
Surface area
2496419266078086
Volume
8.4869064063057E+21
Space diagonal
35330010.374171
Perimeter
61193373
Area
1.8016354191004E+14
Altitude
17665005.187086
Surface area
1.8016354191004E+14
Volume
1.0001915118657E+21
Height
9615610.8915506