20561565 is an odd 8-digits composite number following 20561564
and preceding 20561566 . In scientific notation, it is written as 2.0561565 × 10^7.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 10946496 positive integers (up to 20561565) that are relatively prime to 20561565.
20561565 has 16 divisors, whose sum is 32957568
The reverse of 20561565 is 56516502
Previous prime number is 853
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million five hundred sixty-one thousand five hundred sixty-five
Scientific notation
2.0561565 × 10^7
Engineering notation
2.0561565 × 10^6
Prime Factorization
3 × 5 × 853 × 1607
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20561565
Product of the distinct prime numbers
The prime factorization of 20561565 is 3 × 5 × 853 × 1607.
Since it has a total of 4 prime factors.
6 , 6 , 26 , 83 , 404 , 297 , 8584 , 7072 , 76549 , 64224 , 337785 , 255386 , 5674087 , 6308290 , 55446802 , 86572916 , 820785527 , 341879875 , 7334929737 , 5022207509
n×2
41123130
n×3
61684695
n×4
82246260
n×5
102807825
n÷2
10280782.5
n÷3
6853855
n÷3
5140391.25
n÷5
4112313
n2
422777955249225
n3
8.692976407424E+21
n4
1.7874119944472E+29
n5
3.6751987905605E+36
2 √n
4534.486189195
3 √n
273.95888437709
4 √n
67.33859360868
5 √n
29.01424228966
1 , 3 , 5 , 15 , 853 , 1607 , 2559 , 4265 , 4821 , 8035 , 12795 , 24105 , 1370771 , 4112313 , 6853855 , 20561565
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20561564
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20561565 can be divided by 16 positive divisors.
The sum of these divisors (counting 20561565) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110011011111010011101
3
Ternary
1102200122011110
4
Quaternary
1032123322131
5
Quinary
20230432230
6
Senary
2012412233
8
Octal
116337235
10
Decimal
20561565
12
Duodecimal
6a77079
16
Hexadecimal
139be9d
20
Vigesimal
68a3i5
36
Base36
c8pel
md5
5e9358ede96e19aed13df70535f374db
sha1
40584498d6ff1e9059ea89a17632341ea4f7ff32
sha256
72fead6faac3e845bb3f38f76a065dae935b92aec3da3f8b50dc482a2159a22b
sha512
36470e1e85a9d3c38640f79e70a6e356e51ccfacc21257604fb6bdf630c1e97f78ed18ef1c8e541a82b019af69808826bfbdb24d478cfbf0d652b2506b600573
ripemd-160
182efffd3430367f45cb17cbf65684b32693705c
Diameter
41123130
Circumference
129192123.10062
Area
1.3281961183107E+15
Volume
3.6413054425857E+22
Surface area
5.3127844732427E+15
Circumference
129192123.10062
Perimeter
82246260
Area
422777955249225
Diagonal
29078444.086616
Surface area
2536667731495350
Volume
8.692976407424E+21
Space diagonal
35613675.26313
Perimeter
61684695
Area
1.8306822470293E+14
Altitude
17806837.631565
Surface area
1.8306822470293E+14
Volume
1.0244770943974E+21
Height
9692814.6955387