20642605 is an odd 8-digits composite number following 20642604
and preceding 20642606 . In scientific notation, it is written as 2.0642605 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 16514080 positive integers (up to 20642605) that are relatively prime to 20642605.
20642605 has 4 divisors, whose sum is 24771132
The reverse of 20642605 is 50624602
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million six hundred forty-two thousand six hundred five
Scientific notation
2.0642605 × 10^7
Engineering notation
2.0642605 × 10^6
Prime Factorization
5 × 4128521
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20642605
Product of the distinct prime numbers
The prime factorization of 20642605 is 5 × 4128521.
Since it has a total of 2 prime factors.
5 , 10 , 86 , 89 , 611 , 934 , 9062 , 4047 , 3324 , 21435 , 385995 , 47018 , 92343 , 533262 , 65710732 , 10177417 , 897592034 , 186070692 , 6188392680 , 4831951229
n×2
41285210
n×3
61927815
n×4
82570420
n×5
103213025
n÷2
10321302.5
n÷3
6880868.3333333
n÷3
5160651.25
n÷5
4128521
n2
426117141186025
n3
8.7961678292323E+21
n4
1.8157581801255E+29
n5
3.748197888785E+36
2 √n
4543.4133644211
3 √n
274.3183337296
4 √n
67.404846742805
5 √n
29.037077283116
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
-20642604
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 20642605 can be divided by 4 positive divisors.
The sum of these divisors (counting 20642605) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110101111101100101101
3
Ternary
1102211202022221
4
Quaternary
1032233230231
5
Quinary
20241030410
6
Senary
2014235341
8
Octal
116575455
10
Decimal
20642605
12
Duodecimal
6ab5b51
16
Hexadecimal
13afb2d
20
Vigesimal
6906a5
36
Base36
cafxp
md5
9c2e8c5e2e18413a620b01600bce73a8
sha1
a3d97114cc3683822436ff92fe91d0274bc3de03
sha256
f1624934376ff5fe0e420b0b0bcef4741147406286191152a7c58989d11aa780
sha512
f01d3e843d8a3308ad045cb7631cfb4143dc3c2dbf50326d975300c4e1ca97b7213c728bc839c152695b2ea31c10928e63e6a30d634eead344e423b793335bde
ripemd-160
396014a03440ce626c6c260e34c893c8a2d5a245
Diameter
41285210
Circumference
129701312.43791
Area
1.3386864803187E+15
Volume
3.6845301642746E+22
Surface area
5.3547459212748E+15
Circumference
129701312.43791
Perimeter
82570420
Area
426117141186025
Diagonal
29193051.953711
Surface area
2556702847116150
Volume
8.7961678292323E+21
Space diagonal
35754040.660575
Perimeter
61927815
Area
1.8451413462755E+14
Altitude
17877020.330288
Surface area
1.8451413462755E+14
Volume
1.0366383200842E+21
Height
9731017.3179036