21609904 is an even 8-digits composite number following 21609903
and preceding 21609905 . In scientific notation, it is written as 2.1609904 × 10^7.
The sum of its digits is 31. It has a total of 6 prime factors and 20 positive divisors.
There are 10704960 positive integers (up to 21609904) that are relatively prime to 21609904.
21609904 has 20 divisors, whose sum is 42256720
The reverse of 21609904 is 40990612
Previous prime number is 109
Is Prime? no
Number parity even
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million six hundred nine thousand nine hundred four
Scientific notation
2.1609904 × 10^7
Engineering notation
2.1609904 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 109 × 12391
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2701238
Product of the distinct prime numbers
The prime factorization of 21609904 is 2 × 2 × 2 × 2 × 109 × 12391.
Since it has a total of 6 prime factors.
4 , 10 , 96 , 66 , 725 , 329 , 6334 , 4079 , 91291 , 88959 , 322575 , 577970 , 2563860 , 7169399 , 80312886 , 79163809 , 48631138 , 620429970 , 6753473821 , 6324793935
n×2
43219808
n×3
64829712
n×4
86439616
n×5
108049520
n÷2
10804952
n÷3
7203301.3333333
n÷3
5402476
n÷5
4321980.8
n2
466987950889216
n3
1.0091564787873E+22
n4
2.1807774627571E+29
n5
4.7126391615544E+36
2 √n
4648.6453940906
3 √n
278.53788860151
4 √n
68.180975309031
5 √n
29.304247084767
1 , 2 , 4 , 8 , 16 , 109 , 218 , 436 , 872 , 1744 , 12391 , 24782 , 49564 , 99128 , 198256 , 1350619 , 2701238 , 5402476 , 10804952 , 21609904
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21609903
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21609904 can be divided by 20 positive divisors.
The sum of these divisors (counting 21609904) is 1, the average is 0.05.
Base
System
Value
2
Binary
1010010011011110110110000
3
Ternary
1111122220012211
4
Quaternary
1102123312300
5
Quinary
21013004104
6
Senary
2051101504
8
Octal
122336660
10
Decimal
21609904
12
Duodecimal
72a1894
16
Hexadecimal
149bdb0
20
Vigesimal
6f14f4
36
Base36
cv6b4
md5
416c89f280bf9bb0042f24732d430003
sha1
aeecd4f887fb3426136dfb5c5169a33e7aa67bff
sha256
15d5fa6cdc1908a227e3b51ee8be337d7b7a9c721be9ab565eb42f892b3538c8
sha512
c0c62d5a1661d556b9e55699266b9e6030b7b74b415e7846ef30b04338da18016dadb15ba7c80c1d16c1006fe533ab376b29e2203d0c859616dd48fa4ea104be
ripemd-160
cf25c3a05d685284f0c3ba97bd8da84a2e43ad4c
Diameter
43219808
Circumference
135779031.30236
Area
1.4670859158285E+15
Volume
4.2271447734408E+22
Surface area
5.868343663314E+15
Circumference
135779031.30236
Perimeter
86439616
Area
466987950889216
Diagonal
30561019.318381
Surface area
2801927705335296
Volume
1.0091564787873E+22
Space diagonal
37429451.674686
Perimeter
64829712
Area
2.0221171436565E+14
Altitude
18714725.837343
Surface area
2.0221171436565E+14
Volume
1.1893023157147E+21
Height
10187006.43946