20512709 is an odd 8-digits composite number following 20512708
and preceding 20512710 . In scientific notation, it is written as 2.0512709 × 10^7.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 17558640 positive integers (up to 20512709) that are relatively prime to 20512709.
20512709 has 8 divisors, whose sum is 23474688
The reverse of 20512709 is 90721502
Previous prime number is 991
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million five hundred twelve thousand seven hundred nine
Scientific notation
2.0512709 × 10^7
Engineering notation
2.0512709 × 10^6
Prime Factorization
7 × 991 × 2957
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20512709
Product of the distinct prime numbers
The prime factorization of 20512709 is 7 × 991 × 2957.
Since it has a total of 3 prime factors.
5 , 5 , 89 , 80 , 152 , 403 , 5910 , 7922 , 33343 , 78076 , 528590 , 806662 , 965337 , 272274 , 9139262 , 78885330 , 862543489 , 647308827 , 5545372757 , 2183255777
n×2
41025418
n×3
61538127
n×4
82050836
n×5
102563545
n÷2
10256354.5
n÷3
6837569.6666667
n÷3
5128177.25
n÷5
4102541.8
n2
420771230518681
n3
8.6311578072016E+21
n4
1.770484284322E+29
n5
3.6317428913371E+36
2 √n
4529.0958258796
3 √n
273.74172921086
4 √n
67.298557383347
5 √n
29.000441112526
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20512708
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20512709 can be divided by 8 positive divisors.
The sum of these divisors (counting 20512709) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110001111111111000101
3
Ternary
1102121011010222
4
Quaternary
1032033333011
5
Quinary
20222401314
6
Senary
2011354125
8
Octal
116177705
10
Decimal
20512709
12
Duodecimal
6a52945
16
Hexadecimal
138ffc5
20
Vigesimal
6841f9
36
Base36
c7nph
md5
dd30d09a8110f491679debbfdb909ae5
sha1
73aaff6285bef18979a66a0e28980523b9285e45
sha256
6a7395e506c381eb64ed2fd44ed752bca147934ef02a0efafd4519d3d36ffc3e
sha512
8b2726a2a5972fa2c25f1e5e0bdf55ae416396cb704fa7e55582e9c6ce6a2e8d8f7b419fe0dce2795e7f9a1f18d35fe9e8410235ef31045d8cbd55f93e9d9436
ripemd-160
4d35e36dfe64601fa66b03579fce0ed4d32b6234
Diameter
41025418
Circumference
128885151.79925
Area
1.3218918066394E+15
Volume
3.6154109278772E+22
Surface area
5.2875672265577E+15
Circumference
128885151.79925
Perimeter
82050836
Area
420771230518681
Diagonal
29009351.268813
Surface area
2524627383112086
Volume
8.6311578072016E+21
Space diagonal
35529054.188875
Perimeter
61538127
Area
1.8219928740541E+14
Altitude
17764527.094438
Surface area
1.8219928740541E+14
Volume
1.0171917024939E+21
Height
9669783.7562709