20809557 is an odd 8-digits composite number following 20809556
and preceding 20809558 . In scientific notation, it is written as 2.0809557 × 10^7.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 13873032 positive integers (up to 20809557) that are relatively prime to 20809557.
20809557 has 4 divisors, whose sum is 23121740
The reverse of 20809557 is 75590802
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million eight hundred nine thousand five hundred fifty-seven
Scientific notation
2.0809557 × 10^7
Engineering notation
2.0809557 × 10^6
Prime Factorization
9 × 2312173
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20809557
Product of the distinct prime numbers
The prime factorization of 20809557 is 9 × 2312173.
Since it has a total of 2 prime factors.
6 , 7 , 90 , 35 , 4 , 455 , 5127 , 2048 , 93997 , 33128 , 789579 , 44412 , 1520614 , 7735135 , 83184657 , 42752462 , 37084241 , 263140250 , 8761168180 , 3489016651
n×2
41619114
n×3
62428671
n×4
83238228
n×5
104047785
n÷2
10404778.5
n÷3
6936519
n÷3
5202389.25
n÷5
4161911.4
n2
433037662536249
n3
9.0113219216948E+21
n4
1.8752161717486E+29
n5
3.9022417813324E+36
2 √n
4561.7493355072
3 √n
275.05588726405
4 √n
67.540723534081
5 √n
29.083894927619
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
-20809556
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 20809557 can be divided by 4 positive divisors.
The sum of these divisors (counting 20809557) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111011000011101010101
3
Ternary
1110011020100100
4
Quaternary
1033120131111
5
Quinary
20311401212
6
Senary
2022004313
8
Octal
117303525
10
Decimal
20809557
12
Duodecimal
6b76699
16
Hexadecimal
13d8755
20
Vigesimal
6a13hh
36
Base36
ce0r9
md5
c4a6d2fe42c6d904c0efcd0df2c16ee7
sha1
052ff5d8fab14c9e816fe52e2bcf2def24d7747d
sha256
823c830c8897edd57b64ec9754199efb30268709c255e83e446cbf1dc1a6212a
sha512
a17de4d518c91c079fb514cbbc4ea0416f5c61311780d9156cf96701d4300935e77d25939e74f414c4b815b23d885d4609add1671c5f6e058eec3521e601843b
ripemd-160
5d72c42274768d2d4bc5d1e6447f308b2f271310
Diameter
41619114
Circumference
130750302.79132
Area
1.3604279393516E+15
Volume
3.7746536997772E+22
Surface area
5.4417117574063E+15
Circumference
130750302.79132
Perimeter
83238228
Area
433037662536249
Diagonal
29429157.736376
Surface area
2598225975217494
Volume
9.0113219216948E+21
Space diagonal
36043210.007001
Perimeter
62428671
Area
1.8751080827591E+14
Altitude
18021605.0035
Surface area
1.8751080827591E+14
Volume
1.0619944730476E+21
Height
9809719.2454587