20688747 is an odd 8-digits composite number following 20688746
and preceding 20688748 . In scientific notation, it is written as 2.0688747 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 13776672 positive integers (up to 20688747) that are relatively prime to 20688747.
20688747 has 8 divisors, whose sum is 27616656
The reverse of 20688747 is 74788602
Previous prime number is 6917
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty million six hundred eighty-eight thousand seven hundred forty-seven
Scientific notation
2.0688747 × 10^7
Engineering notation
2.0688747 × 10^6
Prime Factorization
3 × 6917 × 997
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20688747
Product of the distinct prime numbers
The prime factorization of 20688747 is 3 × 6917 × 997.
Since it has a total of 3 prime factors.
2 , 7 , 57 , 21 , 960 , 759 , 2127 , 5637 , 4375 , 38670 , 422245 , 989230 , 2501451 , 5692795 , 86612182 , 13684688 , 545530362 , 633448976 , 547691551 , 1218219010
n×2
41377494
n×3
62066241
n×4
82754988
n×5
103443735
n÷2
10344373.5
n÷3
6896249
n÷3
5172186.75
n÷5
4137749.4
n2
428024252430009
n3
8.8552854683886E+21
n4
1.8320476066827E+29
n5
3.7902769426613E+36
2 √n
4548.488430237
3 √n
274.52257437912
4 √n
67.442482384896
5 √n
29.050046891043
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
-20688746
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 20688747 can be divided by 8 positive divisors.
The sum of these divisors (counting 20688747) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110111010111101101011
3
Ternary
1102221002121220
4
Quaternary
1032322331223
5
Quinary
20244014442
6
Senary
2015233123
8
Octal
116727553
10
Decimal
20688747
12
Duodecimal
6b187a3
16
Hexadecimal
13baf6b
20
Vigesimal
6961h7
36
Base36
cbfjf
md5
7f21597bd96386ad2a65c366f7a3db4e
sha1
a05da87cba2b48c112368b6cacdb8b32f1e01bfa
sha256
c857a30d2411ac6935c8c79671cfb4e8453f91dd681fd047d2665b278d17ebf2
sha512
dbe355b601626b96a70a6d6d1b24000a6f481ee9c1ba1b525a94a052d40c57022810a7b6ba405e5d1626752fd7c8c095fef058c80d1820674a2f1ed46e734aff
ripemd-160
d84c49472e74e5badc7399cbeb99ce9677178bb4
Diameter
41377494
Circumference
129991231.17436
Area
1.3446778469924E+15
Volume
3.7092933030573E+22
Surface area
5.3787113879695E+15
Circumference
129991231.17436
Perimeter
82754988
Area
428024252430009
Diagonal
29258306.595906
Surface area
2568145514580054
Volume
8.8552854683886E+21
Space diagonal
35833960.948938
Perimeter
62066241
Area
1.8533993802012E+14
Altitude
17916980.474469
Surface area
1.8533993802012E+14
Volume
1.0436054006734E+21
Height
9752768.8653019