20565991 is an odd 8-digits composite number following 20565990
and preceding 20565992 . In scientific notation, it is written as 2.0565991 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 20305584 positive integers (up to 20565991) that are relatively prime to 20565991.
20565991 has 4 divisors, whose sum is 20826400
The reverse of 20565991 is 19956502
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million five hundred sixty-five thousand nine hundred ninety-one
Scientific notation
2.0565991 × 10^7
Engineering notation
2.0565991 × 10^6
Prime Factorization
79 × 260329
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20565991
Product of the distinct prime numbers
The prime factorization of 20565991 is 79 × 260329.
Since it has a total of 2 prime factors.
10 , 7 , 2 , 69 , 4 , 873 , 2902 , 1673 , 74198 , 13187 , 340148 , 478610 , 9227186 , 6450500 , 32433663 , 12191110 , 740102163 , 932688089 , 2497767927 , 2193740280
n×2
41131982
n×3
61697973
n×4
82263964
n×5
102829955
n÷2
10282995.5
n÷3
6855330.3333333
n÷3
5141497.75
n÷5
4113198.2
n2
422959985812081
n3
8.6985912615714E+21
n4
1.7889514959816E+29
n5
3.6791560365793E+36
2 √n
4534.9742005881
3 √n
273.97854006365
4 √n
67.342217075087
5 √n
29.015491280004
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
-20565990
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 20565991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20565991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110011100111111100111
3
Ternary
1102200212020101
4
Quaternary
1032130333213
5
Quinary
20231102431
6
Senary
2012444531
8
Octal
116347747
10
Decimal
20565991
12
Duodecimal
6a79747
16
Hexadecimal
139cfe7
20
Vigesimal
68aejb
36
Base36
c8stj
md5
a8f00c1d2b71c93ac65a23ad2d027053
sha1
6dbd8d8b966fef0bf6b5f1a0cf6df63797c55fb7
sha256
9ad6bd890d1f9f102ab5ef8b769b503fb323c6ee18633bec4120cd9ec7c355c9
sha512
0dec035b1f55a19d470ec87ea4fa695860f5c67359f4520f0a78be097c36df787a77e19afafbb17e2e7d4184728ad785893c48a94b89b2a1aaeb15e14b315010
ripemd-160
a73a9b0196ab25d6da89b1bf85b1443e7f59a0b1
Diameter
41131982
Circumference
129219932.47879
Area
1.3287679841897E+15
Volume
3.6436573871911E+22
Surface area
5.3150719367587E+15
Circumference
129219932.47879
Perimeter
82263964
Area
422959985812081
Diagonal
29084703.395843
Surface area
2537759914872486
Volume
8.6985912615714E+21
Space diagonal
35621341.320004
Perimeter
61697973
Area
1.8314704624878E+14
Altitude
17810670.660002
Surface area
1.8314704624878E+14
Volume
1.0251388113045E+21
Height
9694901.1319477