20805625 is an odd 8-digits composite number following 20805624
and preceding 20805626 . In scientific notation, it is written as 2.0805625 × 10^7.
The sum of its digits is 28. It has a total of 4 prime factors and 10 positive divisors.
There are 16644000 positive integers (up to 20805625) that are relatively prime to 20805625.
20805625 has 10 divisors, whose sum is 25999490
The reverse of 20805625 is 52650802
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million eight hundred five thousand six hundred twenty-five
Scientific notation
2.0805625 × 10^7
Engineering notation
2.0805625 × 10^6
Prime Factorization
25 × 5 × 5 × 33289
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
4161125
Product of the distinct prime numbers
The prime factorization of 20805625 is 25 × 5 × 5 × 33289.
Since it has a total of 4 prime factors.
2 , 9 , 23 , 56 , 961 , 860 , 641 , 1476 , 48128 , 43190 , 188478 , 730090 , 842786 , 5092520 , 35626657 , 16117421 , 598726365 , 110353354 , 9957549329 , 1249109182
n×2
41611250
n×3
62416875
n×4
83222500
n×5
104028125
n÷2
10402812.5
n÷3
6935208.3333333
n÷3
5201406.25
n÷5
4161125
n2
432874031640625
n3
9.006214774553E+21
n4
1.8737992726881E+29
n5
3.8985564992821E+36
2 √n
4561.3183401293
3 √n
275.03856208546
4 √n
67.537532825306
5 √n
29.082795754589
10 divisors
τ
Total Divisors
10
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20805624
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.1
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
10
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20805625 can be divided by 10 positive divisors.
The sum of these divisors (counting 20805625) is 1, the average is 0.1.
Base
System
Value
2
Binary
1001111010111011111111001
3
Ternary
1110011000221201
4
Quaternary
1033113133321
5
Quinary
20311240000
6
Senary
2021534201
8
Octal
117273771
10
Decimal
20805625
12
Duodecimal
6b74361
16
Hexadecimal
13d77f9
20
Vigesimal
6a0e15
36
Base36
cdxq1
md5
9d682c1dec9cda962a4127b719fd411e
sha1
b77cbe545102124dbecead4143870ccb7c388feb
sha256
4b42245c9752b89de632515898c9009ba11c3907b32851b9b53787f61e4cef4c
sha512
9ba90713807a5c57ac7101e78eeee42b17c19c7cbf5a120a5a5de1ef0b4913fa75d4e653f1ff35b093e4eac751f29f6de2d92580d1cd38f96678d5bbb162b4c1
ripemd-160
9c4a0c94f7d6c13608e57caddba2a67d22263b6d
Diameter
41611250
Circumference
130725597.30669
Area
1.359913877732E+15
Volume
3.772514422985E+22
Surface area
5.4396555109279E+15
Circumference
130725597.30669
Perimeter
83222500
Area
432874031640625
Diagonal
29423597.048649
Surface area
2597244189843750
Volume
9.006214774553E+21
Space diagonal
36036399.583225
Perimeter
62416875
Area
1.8743995401969E+14
Altitude
18018199.791613
Surface area
1.8743995401969E+14
Volume
1.0613925899848E+21
Height
9807865.6828829