21509906 is an even 8-digits composite number following 21509905
and preceding 21509907 . In scientific notation, it is written as 2.1509906 × 10^7.
The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors.
There are 9777220 positive integers (up to 21509906) that are relatively prime to 21509906.
21509906 has 8 divisors, whose sum is 35198064
The reverse of 21509906 is 60990512
Previous prime number is 11
Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million five hundred nine thousand nine hundred six
Scientific notation
2.1509906 × 10^7
Engineering notation
2.1509906 × 10^6
Prime Factorization
2 × 11 × 977723
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21509906
Product of the distinct prime numbers
The prime factorization of 21509906 is 2 × 11 × 977723.
Since it has a total of 3 prime factors.
6 , 5 , 3 , 45 , 283 , 14 , 7555 , 2056 , 48778 , 25406 , 264906 , 405299 , 8608845 , 8572338 , 71601936 , 50844285 , 26600450 , 692471387 , 8752252544 , 9707240700
n×2
43019812
n×3
64529718
n×4
86039624
n×5
107549530
n÷2
10754953
n÷3
7169968.6666667
n÷3
5377476.5
n÷5
4301981.2
n2
462676056128836
n3
9.952118475782E+21
n4
2.1406913291493E+29
n5
4.6046069265017E+36
2 √n
4637.8773161868
3 √n
278.1075873625
4 √n
68.10196264563
5 √n
29.277076161502
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21509905
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21509906 can be divided by 8 positive divisors.
The sum of these divisors (counting 21509906) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010000011011100010010
3
Ternary
1111110211001012
4
Quaternary
1102003130102
5
Quinary
21001304111
6
Senary
2045010522
8
Octal
122033422
10
Decimal
21509906
12
Duodecimal
7253a42
16
Hexadecimal
1483712
20
Vigesimal
6e8ef6
36
Base36
ct15e
md5
5dac3824a08d8eb7d3eab3cef24d7086
sha1
a0b2041759a83f4c4792f4aafdbeb85979f39545
sha256
4503c01ac3ee66eee6230ac51c5dac1e974a2a934f205438da5826e9fcc1e895
sha512
91d224cbfb72fa63028695914792305af5b6983a4cab4175d3120f6d021e3a614a9f5bd05cbe99ee93a51a539691a68a1f0eb08dc05aa1c6d883fa10c0e4ec0f
ripemd-160
e3853eeac2be7b7bbe1d682361e4b9665d0d2922
Diameter
43019812
Circumference
135150725.33801
Area
1.4535396989262E+15
Volume
4.1687336388229E+22
Surface area
5.814158795705E+15
Circumference
135150725.33801
Perimeter
86039624
Area
462676056128836
Diagonal
30419600.79057
Surface area
2776056336773016
Volume
9.952118475782E+21
Space diagonal
37256250.058031
Perimeter
64529718
Area
2.0034460916518E+14
Altitude
18628125.029015
Surface area
2.0034460916518E+14
Volume
1.1728684102329E+21
Height
10139866.93019