20789905 is an odd 8-digits composite number following 20789904
and preceding 20789906 . In scientific notation, it is written as 2.0789905 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 16631920 positive integers (up to 20789905) that are relatively prime to 20789905.
20789905 has 4 divisors, whose sum is 24947892
The reverse of 20789905 is 50998702
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty million seven hundred eighty-nine thousand nine hundred five
Scientific notation
2.0789905 × 10^7
Engineering notation
2.0789905 × 10^6
Prime Factorization
5 × 4157981
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20789905
Product of the distinct prime numbers
The prime factorization of 20789905 is 5 × 4157981.
Since it has a total of 2 prime factors.
5 , 7 , 29 , 21 , 697 , 688 , 3133 , 7830 , 70920 , 69551 , 748167 , 994672 , 3569279 , 5709997 , 70158644 , 34115707 , 260692618 , 925322358 , 3043398929 , 9988912044
n×2
41579810
n×3
62369715
n×4
83159620
n×5
103949525
n÷2
10394952.5
n÷3
6929968.3333333
n÷3
5197476.25
n÷5
4157981
n2
432220149909025
n3
8.9858158556944E+21
n4
1.8681425798738E+29
n5
3.8838506762031E+36
2 √n
4559.5948284908
3 √n
274.96927480418
4 √n
67.524771961783
5 √n
29.078399637827
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
-20789904
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 20789905 can be divided by 4 positive divisors.
The sum of these divisors (counting 20789905) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111010011101010010001
3
Ternary
1110010020101111
4
Quaternary
1033103222101
5
Quinary
20310234110
6
Senary
2021333321
8
Octal
117235221
10
Decimal
20789905
12
Duodecimal
6b67241
16
Hexadecimal
13d3a91
20
Vigesimal
69ief5
36
Base36
cdlld
md5
6f026080964da597608e9fd15248232e
sha1
b106ed6b73d88e2040f17bc8d46abb9696a0f62b
sha256
0076d8be581535fc46941669ad75fde5900a26a0e9b7fa486d2e0a833f81c18a
sha512
12c58ad941253e114d13c3819d3fdfe84a9997e8101aa48a31014bd03dcdcb2d0a203fa3cf2c8e1a7bf037e5b58d6a41b0e44044cc03b33e7a3855816f8f2fe7
ripemd-160
6eb07350885df30a60bc2e8667ac144c7c0d396e
Diameter
41579810
Circumference
130626825.63366
Area
1.3578596476877E+15
Volume
3.7639697438347E+22
Surface area
5.4314385907507E+15
Circumference
130626825.63366
Perimeter
83159620
Area
432220149909025
Diagonal
29401365.611448
Surface area
2593320899454150
Volume
8.9858158556944E+21
Space diagonal
36009171.74453
Perimeter
62369715
Area
1.8715681492437E+14
Altitude
18004585.872265
Surface area
1.8715681492437E+14
Volume
1.0589885543425E+21
Height
9800455.2038161