20809903 is an odd 8-digits prime number following 20809902
and preceding 20809904 . In scientific notation, it is written as 2.0809903 × 10^7.
The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors.
There are 20809902 positive integers (up to 20809903) that are relatively prime to 20809903.
20809903 has 2 divisors, whose sum is 20809904
The reverse of 20809903 is 30990802
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million eight hundred nine thousand nine hundred three
Scientific notation
2.0809903 × 10^7
Engineering notation
2.0809903 × 10^6
Prime Factorization
20809903
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20809903
Product of the distinct prime numbers
The prime factorization of 20809903 is 20809903.
Since it has a total of 1 prime factors.
6 , 1 , 1 , 19 , 135 , 761 , 6249 , 8539 , 3904 , 87981 , 921119 , 923494 , 3575824 , 2777033 , 92702293 , 48904265 , 828242122 , 962179224 , 386893702 , 6586346897
n×2
41619806
n×3
62429709
n×4
83239612
n×5
104049515
n÷2
10404951.5
n÷3
6936634.3333333
n÷3
5202475.75
n÷5
4161980.6
n2
433052062869409
n3
9.0117714222623E+21
n4
1.8753408915545E+29
n5
3.9025662045183E+36
2 √n
4561.7872593974
3 √n
275.05741170479
4 √n
67.541004281824
5 √n
29.083991642419
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20809904
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10404952
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4561.7873690035
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999038919
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20809903 can be divided by 2 positive divisors.
The sum of these divisors (counting 20809903) is 20809904, the average is 10404952.
Base
System
Value
2
Binary
1001111011000100010101111
3
Ternary
1110011020211011
4
Quaternary
1033120202233
5
Quinary
20311404103
6
Senary
2022010051
8
Octal
117304257
10
Decimal
20809903
12
Duodecimal
6b76927
16
Hexadecimal
13d88af
20
Vigesimal
6a14f3
36
Base36
ce10v
md5
1b2ef9b4c482f86c4f8d64ac257e6e24
sha1
13b94b13e37428660e8f61faab268a1d3da9c744
sha256
db50f5049965ea4e30aa5abb2f93dfbf282e16c9163880f1f4011e561e4903bf
sha512
adf5917b6d593e5ae5803600dca4edc1550162affbd1ccc41b454730d719e171357a7de21a56ae8967b7a7c3d49ba61f4852b1509d3dc30ee1218eb5cdc93659
ripemd-160
d15b5b914741b4eead5065f38cd0d40bdcd23bf8
Diameter
41619806
Circumference
130752476.77343
Area
1.3604731793324E+15
Volume
3.7748419861346E+22
Surface area
5.4418927173298E+15
Circumference
130752476.77343
Perimeter
83239612
Area
433052062869409
Diagonal
29429647.054269
Surface area
2598312377216454
Volume
9.0117714222623E+21
Space diagonal
36043809.29658
Perimeter
62429709
Area
1.8751704380308E+14
Altitude
18021904.64829
Surface area
1.8751704380308E+14
Volume
1.0620474471975E+21
Height
9809882.3514229