20505907 is an odd 8-digits composite number following 20505906
and preceding 20505908 . In scientific notation, it is written as 2.0505907 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20484576 positive integers (up to 20505907) that are relatively prime to 20505907.
20505907 has 4 divisors, whose sum is 20527240
The reverse of 20505907 is 70950502
Previous prime number is 1009
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million five hundred five thousand nine hundred seven
Scientific notation
2.0505907 × 10^7
Engineering notation
2.0505907 × 10^6
Prime Factorization
1009 × 20323
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20505907
Product of the distinct prime numbers
The prime factorization of 20505907 is 1009 × 20323.
Since it has a total of 2 prime factors.
9 , 4 , 33 , 9 , 217 , 747 , 7402 , 7928 , 91093 , 43817 , 500972 , 194746 , 9709377 , 2971041 , 57233746 , 33092026 , 204229082 , 452198842 , 1576065182 , 4001761142
n×2
41011814
n×3
61517721
n×4
82023628
n×5
102529535
n÷2
10252953.5
n÷3
6835302.3333333
n÷3
5126476.75
n÷5
4101181.4
n2
420492221892649
n3
8.622574396354E+21
n4
1.7681370867222E+29
n5
3.6257254663576E+36
2 √n
4528.3448411092
3 √n
273.71146834361
4 √n
67.292977650786
5 √n
28.998517552159
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
-20505906
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 20505907 can be divided by 4 positive divisors.
The sum of these divisors (counting 20505907) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110001110010100110011
3
Ternary
1102120210211001
4
Quaternary
1032032110303
5
Quinary
20222142112
6
Senary
2011302431
8
Octal
116162463
10
Decimal
20505907
12
Duodecimal
6a4aa17
16
Hexadecimal
138e533
20
Vigesimal
6834f7
36
Base36
c7igj
md5
f48398f58ec37de1480c195c90f3ffd0
sha1
86797addd120265ffc739cec9a8236ac58134c1b
sha256
30e664d26da78e9afb3b00300770317f6e17deeba8c6094242c63484b70d8991
sha512
96b8fee35655a416487bc0f4ab7389c6e5ab73fbd2ae51da0f429cf4d50e0b824f8b56b97d101ccab9a785a4cfde010c76b459d10be51a738f6d28e2b8aa747d
ripemd-160
41fdb9f6ed6ecb90a9fe012b4eb973a6825ec2b8
Diameter
41011814
Circumference
128842413.57279
Area
1.3210152751896E+15
Volume
3.611815517149E+22
Surface area
5.2840611007584E+15
Circumference
128842413.57279
Perimeter
82023628
Area
420492221892649
Diagonal
28999731.788161
Surface area
2522953331355894
Volume
8.622574396354E+21
Space diagonal
35517272.779282
Perimeter
61517721
Area
1.820784731264E+14
Altitude
17758636.389641
Surface area
1.820784731264E+14
Volume
1.0161801378246E+21
Height
9666577.2627205