20809507 is an odd 8-digits composite number following 20809506
and preceding 20809508 . In scientific notation, it is written as 2.0809507 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 20594880 positive integers (up to 20809507) that are relatively prime to 20809507.
20809507 has 4 divisors, whose sum is 21024136
The reverse of 20809507 is 70590802
Previous prime number is 97
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million eight hundred nine thousand five hundred seven
Scientific notation
2.0809507 × 10^7
Engineering notation
2.0809507 × 10^6
Prime Factorization
97 × 214531
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20809507
Product of the distinct prime numbers
The prime factorization of 20809507 is 97 × 214531.
Since it has a total of 2 prime factors.
4 , 4 , 48 , 49 , 587 , 308 , 3586 , 2514 , 2511 , 47519 , 75164 , 326253 , 8276273 , 7468005 , 80229224 , 72496854 , 857656923 , 576844946 , 9482309504 , 4434956810
n×2
41619014
n×3
62428521
n×4
83238028
n×5
104047535
n÷2
10404753.5
n÷3
6936502.3333333
n÷3
5202376.75
n÷5
4161901.4
n2
433035581583049
n3
9.0112569662015E+21
n4
1.8751981491697E+29
n5
3.9021949011534E+36
2 √n
4561.7438551501
3 √n
275.05566696775
4 √n
67.540682963308
5 √n
29.083880951386
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
-20809506
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 20809507 can be divided by 4 positive divisors.
The sum of these divisors (counting 20809507) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111011000011100100011
3
Ternary
1110011020021111
4
Quaternary
1033120130203
5
Quinary
20311401012
6
Senary
2022004151
8
Octal
117303443
10
Decimal
20809507
12
Duodecimal
6b76657
16
Hexadecimal
13d8723
20
Vigesimal
6a13f7
36
Base36
ce0pv
md5
10ddab1c12c527c5565b1fdfdfbef939
sha1
a8c81f50921ea01c49eb4c62c1165bea80e7652b
sha256
310c06798b3ed51fd7c6bce7659470af33bdaec0897f34f48d769c0e5f488a31
sha512
fa52b492ff0db786c06d261612575439c67763f1f4900dcd50efa92d4bb04eef6e81e2152e9b93394f90eb981eef95b39bb18e8049a6ad7542d164d8330d7b5d
ripemd-160
974fffa4afdf9c5ff288e64de1cb56cc597d1fc9
Diameter
41619014
Circumference
130749988.63205
Area
1.3604214018443E+15
Volume
3.7746264912838E+22
Surface area
5.4416856073772E+15
Circumference
130749988.63205
Perimeter
83238028
Area
433035581583049
Diagonal
29429087.025698
Surface area
2598213489498294
Volume
9.0112569662015E+21
Space diagonal
36043123.40446
Perimeter
62428521
Area
1.8750990719674E+14
Altitude
18021561.70223
Surface area
1.8750990719674E+14
Volume
1.0619868179693E+21
Height
9809695.6752326