20689785 is an odd 8-digits composite number following 20689784
and preceding 20689786 . In scientific notation, it is written as 2.0689785 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 10985472 positive integers (up to 20689785) that are relatively prime to 20689785.
20689785 has 8 divisors, whose sum is 24852360
The reverse of 20689785 is 58798602
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million six hundred eighty-nine thousand seven hundred eighty-five
Scientific notation
2.0689785 × 10^7
Engineering notation
2.0689785 × 10^6
Prime Factorization
2313 × 5 × 1789
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20689785
Product of the distinct prime numbers
The prime factorization of 20689785 is 2313 × 5 × 1789.
Since it has a total of 3 prime factors.
8 , 7 , 31 , 24 , 159 , 530 , 6303 , 7521 , 25620 , 33366 , 455168 , 60180 , 1020729 , 8154097 , 91004823 , 67226097 , 161835416 , 416391174 , 3609449548 , 1990354453
n×2
41379570
n×3
62069355
n×4
82759140
n×5
103448925
n÷2
10344892.5
n÷3
6896595
n÷3
5172446.25
n÷5
4137957
n2
428067203346225
n3
8.8566184027847E+21
n4
1.8324153058066E+29
n5
3.7912278707847E+36
2 √n
4548.6025326467
3 √n
274.52716543639
4 √n
67.443328303448
5 √n
29.050338386159
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
-20689784
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 20689785 can be divided by 8 positive divisors.
The sum of these divisors (counting 20689785) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110111011001101111001
3
Ternary
1102221011001100
4
Quaternary
1032323031321
5
Quinary
20244033120
6
Senary
2015242013
8
Octal
116731571
10
Decimal
20689785
12
Duodecimal
6b19309
16
Hexadecimal
13bb379
20
Vigesimal
696495
36
Base36
cbgc9
md5
3913b869c48eab454a39b0ba654ae7a8
sha1
b03a65b8aff3c91d06b05b3213725d41b7ea3191
sha256
93332cc3ab6283e273cddeeded9c4823bde2386e6bf3fd948f6b4e6bf21a21a9
sha512
0c0e59483c5f4caf0122ad5625648ff300646f86ed68cc5503a46903c614845b87cf74179114b917754d1580f9262ed91e59cf7bfcc627ca76b1414d89c78b22
ripemd-160
382d672a24a52e7bb36ebb7d31a0d5609f04efbb
Diameter
41379570
Circumference
129997753.1207
Area
1.3448127812752E+15
Volume
3.7098516413115E+22
Surface area
5.3792511251009E+15
Circumference
129997753.1207
Perimeter
82759140
Area
428067203346225
Diagonal
29259774.549583
Surface area
2568403220077350
Volume
8.8566184027847E+21
Space diagonal
35835758.817676
Perimeter
62069355
Area
1.8535853631239E+14
Altitude
17917879.408838
Surface area
1.8535853631239E+14
Volume
1.0437624884984E+21
Height
9753258.1831945