20806009 is an odd 8-digits composite number following 20806008
and preceding 20806010 . In scientific notation, it is written as 2.0806009 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 17833716 positive integers (up to 20806009) that are relatively prime to 20806009.
20806009 has 4 divisors, whose sum is 23778304
The reverse of 20806009 is 90060802
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million eight hundred six thousand nine
Scientific notation
2.0806009 × 10^7
Engineering notation
2.0806009 × 10^6
Prime Factorization
7 × 2972287
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20806009
Product of the distinct prime numbers
The prime factorization of 20806009 is 7 × 2972287.
Since it has a total of 2 prime factors.
5 , 6 , 55 , 75 , 297 , 50 , 4520 , 8812 , 38475 , 40187 , 757820 , 646561 , 660467 , 8221406 , 43733811 , 2135206 , 816905706 , 665910518 , 3133294815 , 8692458630
n×2
41612018
n×3
62418027
n×4
83224036
n×5
104030045
n÷2
10403004.5
n÷3
6935336.3333333
n÷3
5201502.25
n÷5
4161201.8
n2
432890010508081
n3
9.0067134546412E+21
n4
1.8739376119769E+29
n5
3.8989162820229E+36
2 √n
4561.3604330287
3 √n
275.04025416245
4 √n
67.537844450565
5 √n
29.082903107395
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
-20806008
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 20806009 can be divided by 4 positive divisors.
The sum of these divisors (counting 20806009) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111010111100101111001
3
Ternary
1110011001110221
4
Quaternary
1033113211321
5
Quinary
20311243014
6
Senary
2021540041
8
Octal
117274571
10
Decimal
20806009
12
Duodecimal
6b74621
16
Hexadecimal
13d7979
20
Vigesimal
6a0f09
36
Base36
cdy0p
md5
5722b259ca22a4cb9dbbddd1e2675f30
sha1
6de16d90d62f85634ca9a4970729529e14923ea9
sha256
8b8f0feb18f49ca363e0a11d943663af82d3dad72c9f502560bfb5779c088110
sha512
fceb1d5cb1978f6167eca7e4402d093ff3933c5217e6cabc80e51b4f5bc63ede2e21ca9aba4b4fe48bc55981c287e59382c9081cc32829224ffcbe225d2037b3
ripemd-160
6ad3113f55583cebd0ff67d90c51a074d8768849
Diameter
41612018
Circumference
130728010.04985
Area
1.3599640768246E+15
Volume
3.7727233096119E+22
Surface area
5.4398563072984E+15
Circumference
130728010.04985
Perimeter
83224036
Area
432890010508081
Diagonal
29424140.106657
Surface area
2597340063048486
Volume
9.0067134546412E+21
Space diagonal
36037064.690735
Perimeter
62418027
Area
1.8744687307226E+14
Altitude
18018532.345368
Surface area
1.8744687307226E+14
Volume
1.0614513599968E+21
Height
9808046.7022189