20789979 is an odd 8-digits composite number following 20789978
and preceding 20789980 . In scientific notation, it is written as 2.0789979 × 10^7.
The sum of its digits is 51. It has a total of 2 prime factors and 4 positive divisors.
There are 11879976 positive integers (up to 20789979) that are relatively prime to 20789979.
20789979 has 4 divisors, whose sum is 21780000
The reverse of 20789979 is 97998702
Previous prime number is 21
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 51
Digital Root 6
Name
twenty million seven hundred eighty-nine thousand nine hundred seventy-nine
Scientific notation
2.0789979 × 10^7
Engineering notation
2.0789979 × 10^6
Prime Factorization
21 × 989999
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20789979
Product of the distinct prime numbers
The prime factorization of 20789979 is 21 × 989999.
Since it has a total of 2 prime factors.
9 , 4 , 19 , 14 , 923 , 912 , 2058 , 9982 , 73719 , 58913 , 73803 , 354740 , 1810636 , 4310095 , 86322096 , 91285810 , 879841291 , 581473447 , 4388108050 , 5812747311
n×2
41579958
n×3
62369937
n×4
83159916
n×5
103949895
n÷2
10394989.5
n÷3
6929993
n÷3
5197494.75
n÷5
4157995.8
n2
432223226820441
n3
8.9859118089092E+21
n4
1.8681691780307E+29
n5
3.8839197979706E+36
2 √n
4559.6029432397
3 √n
274.96960104749
4 √n
67.524832048956
5 √n
29.078420338244
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
-20789978
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 20789979 can be divided by 4 positive divisors.
The sum of these divisors (counting 20789979) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111010011101011011011
3
Ternary
1110010020111020
4
Quaternary
1033103223123
5
Quinary
20310234404
6
Senary
2021333523
8
Octal
117235333
10
Decimal
20789979
12
Duodecimal
6b672a3
16
Hexadecimal
13d3adb
20
Vigesimal
69ieij
36
Base36
cdlnf
md5
9d376424ee5e8c8ace33be2eb49862b1
sha1
9e6ceba6dc298ec3a014fe23dee740aa28a8ccfc
sha256
b7ca6cf160cc455c7cf6bcefbb8bbfd5b76fb37e66eb4456e941dd2bfeb77900
sha512
2bfdcb63fd419fb8a917d7c73517d8851e82149a2ee01e3fa3f826ca9886098e96f851894ba48fe48b50d97e21726759748b1bacda8b3a64b24fd2c652c2cdbc
ripemd-160
ad9e24b7e302ed4374613c1431d54b69ba0e5fad
Diameter
41579958
Circumference
130627290.58937
Area
1.35786931409E+15
Volume
3.7640099366233E+22
Surface area
5.4314772563599E+15
Circumference
130627290.58937
Perimeter
83159916
Area
432223226820441
Diagonal
29401470.263252
Surface area
2593339360922646
Volume
8.9859118089092E+21
Space diagonal
36009299.91629
Perimeter
62369937
Area
1.8715814726609E+14
Altitude
18004649.958145
Surface area
1.8715814726609E+14
Volume
1.0589998625373E+21
Height
9800490.0877506