21609965 is an odd 8-digits composite number following 21609964
and preceding 21609966 . In scientific notation, it is written as 2.1609965 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 15958080 positive integers (up to 21609965) that are relatively prime to 21609965.
21609965 has 4 divisors, whose sum is 21942492
The reverse of 21609965 is 56990612
Previous prime number is 65
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million six hundred nine thousand nine hundred sixty-five
Scientific notation
2.1609965 × 10^7
Engineering notation
2.1609965 × 10^6
Prime Factorization
65 × 332461
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21609965
Product of the distinct prime numbers
The prime factorization of 21609965 is 65 × 332461.
Since it has a total of 2 prime factors.
5 , 10 , 44 , 58 , 933 , 766 , 2264 , 6484 , 54191 , 91524 , 908173 , 357974 , 7112799 , 2506220 , 97692622 , 98485576 , 741705648 , 839626486 , 2098124140 , 2381987262
n×2
43219930
n×3
64829895
n×4
86439860
n×5
108049825
n÷2
10804982.5
n÷3
7203321.6666667
n÷3
5402491.25
n÷5
4321993
n2
466990587301225
n3
1.0091650246909E+22
n4
2.1808020862794E+29
n5
4.7127056756425E+36
2 √n
4648.6519551371
3 √n
278.53815068497
4 √n
68.181023423949
5 √n
29.304263628636
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
-21609964
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 21609965 can be divided by 4 positive divisors.
The sum of these divisors (counting 21609965) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010011011110111101101
3
Ternary
1111122220022002
4
Quaternary
1102123313231
5
Quinary
21013004330
6
Senary
2051102045
8
Octal
122336755
10
Decimal
21609965
12
Duodecimal
72a1925
16
Hexadecimal
149bded
20
Vigesimal
6f14i5
36
Base36
cv6ct
md5
2ada1cad7f500d20e4aed9d855ca627b
sha1
6ca5730187e316ea0d9670a747096897404167de
sha256
0f36ef75bf22f75ddc0b35c0c9f090305b6cdf1bb1bca1a0a6061986a56c2d91
sha512
08d9aa242e230c50c914691bde5f5dd30026e3f2499d6052779d399aefdb96f97d60cb415e4ebbde25ac26f31d45a60ce521e2f498fc9dd3abd5ba309ca1dcc5
ripemd-160
4980801813aab76766943630447fde95c21d9d15
Diameter
43219930
Circumference
135779414.57667
Area
1.4670941983611E+15
Volume
4.2271805704382E+22
Surface area
5.8683767934444E+15
Circumference
135779414.57667
Perimeter
86439860
Area
466990587301225
Diagonal
30561105.585408
Surface area
2801943523807350
Volume
1.0091650246909E+22
Space diagonal
37429557.329785
Perimeter
64829895
Area
2.0221285596554E+14
Altitude
18714778.664893
Surface area
2.0221285596554E+14
Volume
1.1893123871587E+21
Height
10187035.195136