21609909 is an odd 8-digits composite number following 21609908
and preceding 21609910 . In scientific notation, it is written as 2.1609909 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors.
There are 14349960 positive integers (up to 21609909) that are relatively prime to 21609909.
21609909 has 12 divisors, whose sum is 24373440
The reverse of 21609909 is 90990612
Previous prime number is 431
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million six hundred nine thousand nine hundred nine
Scientific notation
2.1609909 × 10^7
Engineering notation
2.1609909 × 10^6
Prime Factorization
9 × 9 × 431 × 619
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2401101
Product of the distinct prime numbers
The prime factorization of 21609909 is 9 × 9 × 431 × 619.
Since it has a total of 4 prime factors.
5 , 6 , 50 , 41 , 381 , 712 , 7379 , 5020 , 59642 , 78121 , 326282 , 766136 , 417766 , 5719730 , 94722124 , 17885716 , 106607018 , 812198746 , 108051888 , 9083239264
n×2
43219818
n×3
64829727
n×4
86439636
n×5
108049545
n÷2
10804954.5
n÷3
7203303
n÷3
5402477.25
n÷5
4321981.8
n2
466988166988281
n3
1.0091571792694E+22
n4
2.1807794810707E+29
n5
4.7126446135006E+36
2 √n
4648.6459318817
3 √n
278.53791008378
4 √n
68.18097925288
5 √n
29.304248440824
1 , 9 , 81 , 431 , 619 , 3879 , 5571 , 34911 , 50139 , 266789 , 2401101 , 21609909
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21609908
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21609909 can be divided by 12 positive divisors.
The sum of these divisors (counting 21609909) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010011011110110110101
3
Ternary
1111122220020000
4
Quaternary
1102123312311
5
Quinary
21013004114
6
Senary
2051101513
8
Octal
122336665
10
Decimal
21609909
12
Duodecimal
72a1899
16
Hexadecimal
149bdb5
20
Vigesimal
6f14f9
36
Base36
cv6b9
md5
e9f35ec1609bfc8e74aac2b95c3bea20
sha1
958fc3856b5198047c2c47e590102adf415516fc
sha256
390608eb193db5da9186bcfc1f812f9fde6827f86f401361e7398a4d02b5b35c
sha512
60bf708c07f500260d6d9b4e538aee4d41f9917ac323abc9d547a5b6dd0ee0184ae1a356054c887761ab8ea500b1bcff82a9296cfdb8803e64fbe18411aac1a9
ripemd-160
1806aee4e0d57efa288b8ee30b244b2bf7a7f042
Diameter
43219818
Circumference
135779062.71829
Area
1.4670865947237E+15
Volume
4.2271477076133E+22
Surface area
5.868346378895E+15
Circumference
135779062.71829
Perimeter
86439636
Area
466988166988281
Diagonal
30561026.389448
Surface area
2801929001929686
Volume
1.0091571792694E+22
Space diagonal
37429460.33494
Perimeter
64829727
Area
2.0221180793929E+14
Altitude
18714730.16747
Surface area
2.0221180793929E+14
Volume
1.1893031412407E+21
Height
10187008.796483