21609979 is an odd 8-digits composite number following 21609978
and preceding 21609980 . In scientific notation, it is written as 2.1609979 × 10^7.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 21287376 positive integers (up to 21609979) that are relatively prime to 21609979.
21609979 has 4 divisors, whose sum is 21932584
The reverse of 21609979 is 97990612
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-one million six hundred nine thousand nine hundred seventy-nine
Scientific notation
2.1609979 × 10^7
Engineering notation
2.1609979 × 10^6
Prime Factorization
67 × 322537
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21609979
Product of the distinct prime numbers
The prime factorization of 21609979 is 67 × 322537.
Since it has a total of 2 prime factors.
6 , 2 , 10 , 50 , 455 , 582 , 7237 , 7571 , 46483 , 35424 , 356738 , 64119 , 9449123 , 8363437 , 10901805 , 76895863 , 388472344 , 979122294 , 7980007649 , 1357357082
n×2
43219958
n×3
64829937
n×4
86439916
n×5
108049895
n÷2
10804989.5
n÷3
7203326.3333333
n÷3
5402494.75
n÷5
4321995.8
n2
466991192380441
n3
1.0091669860526E+22
n4
2.1808077376091E+29
n5
4.7127209412769E+36
2 √n
4648.6534609497
3 √n
278.5382108352
4 √n
68.181034466703
5 √n
29.304267425584
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
-21609978
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 21609979 can be divided by 4 positive divisors.
The sum of these divisors (counting 21609979) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010011011110111111011
3
Ternary
1111122220022121
4
Quaternary
1102123313323
5
Quinary
21013004404
6
Senary
2051102111
8
Octal
122336773
10
Decimal
21609979
12
Duodecimal
72a1937
16
Hexadecimal
149bdfb
20
Vigesimal
6f14ij
36
Base36
cv6d7
md5
38701ad8d9d6788e9410146ffdfd9ce4
sha1
c3c517016bcdb714004fd04cd9d5a6983d4bcd66
sha256
15ec407ab1d49029ab061006cab1d1aac9ef8122a010813a855b4bc525ac762c
sha512
68579bfbbc44d04a9e5613ab2fdecc83082b36f37a1b1cc4d660a620ae91fc06d0410dbc8a46c2ad64f0ab0a8e4ac8efda77ac5db34e9e73b4a9c0dc2b99dc25
ripemd-160
db8d65100ebd2412861ca49a7f88ba6d6608b42a
Diameter
43219958
Circumference
135779502.54126
Area
1.4670960992735E+15
Volume
4.2271887861711E+22
Surface area
5.8683843970941E+15
Circumference
135779502.54126
Perimeter
86439916
Area
466991192380441
Diagonal
30561125.384398
Surface area
2801947154282646
Volume
1.0091669860526E+22
Space diagonal
37429581.578496
Perimeter
64829937
Area
2.0221311797252E+14
Altitude
18714790.789248
Surface area
2.0221311797252E+14
Volume
1.1893146986457E+21
Height
10187041.794799