21006925 is an odd 8-digits composite number following 21006924
and preceding 21006926 . In scientific notation, it is written as 2.1006925 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 6 positive divisors.
There are 16805520 positive integers (up to 21006925) that are relatively prime to 21006925.
21006925 has 6 divisors, whose sum is 26048618
The reverse of 21006925 is 52960012
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million six thousand nine hundred twenty-five
Scientific notation
2.1006925 × 10^7
Engineering notation
2.1006925 × 10^6
Prime Factorization
5 × 5 × 840277
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
4201385
Product of the distinct prime numbers
The prime factorization of 21006925 is 5 × 5 × 840277.
Since it has a total of 3 prime factors.
5 , 10 , 37 , 12 , 744 , 367 , 6734 , 4291 , 97485 , 11345 , 408507 , 832549 , 2061183 , 7286406 , 49980906 , 11574629 , 374679829 , 18646615 , 4944643349 , 1369441750
n×2
42013850
n×3
63020775
n×4
84027700
n×5
105034625
n÷2
10503462.5
n÷3
7002308.3333333
n÷3
5251731.25
n÷5
4201385
n2
441290897955625
n3
9.2701647965365E+21
n4
1.9473765661848E+29
n5
4.0908393472602E+36
2 √n
4583.3312121207
3 √n
275.92274057496
4 √n
67.700304372438
5 √n
29.138855982547
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21006924
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21006925 can be divided by 6 positive divisors.
The sum of these divisors (counting 21006925) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1010000001000101001001101
3
Ternary
1110112021002021
4
Quaternary
1100020221031
5
Quinary
20334210200
6
Senary
2030130141
8
Octal
120105115
10
Decimal
21006925
12
Duodecimal
7050951
16
Hexadecimal
1408a4d
20
Vigesimal
6b5h65
36
Base36
ci91p
md5
046d01f700253bc6d8fffd80950b287d
sha1
6161ab61a0430a4edd128de9dcbda816ca08fe26
sha256
fe2c28fe9dd3ce66e44f75edfed3f90f6aed3132da23de4cbf382b7e90802600
sha512
4e139c6474aaa6b77ea8f0aafa6136172717e555aef49902532c7ebef86976f139d7d9195dd57529f6286d9984e62360f1e5dfdab76861d0071fb1159b45a272
ripemd-160
f7e119e1e610fca80eea66eae1aa8c8c5611e768
Diameter
42013850
Circumference
131990402.50902
Area
1.3863562431134E+15
Volume
3.8830775496488E+22
Surface area
5.5454249724537E+15
Circumference
131990402.50902
Perimeter
84027700
Area
441290897955625
Diagonal
29708278.238754
Surface area
2647745387733750
Volume
9.2701647965365E+21
Space diagonal
36385061.410789
Perimeter
63020775
Area
1.9108456404421E+14
Altitude
18192530.705394
Surface area
1.9108456404421E+14
Volume
1.0924993983913E+21
Height
9902759.4129181