21500979 is an odd 8-digits composite number following 21500978
and preceding 21500980 . In scientific notation, it is written as 2.1500979 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 14333984 positive integers (up to 21500979) that are relatively prime to 21500979.
21500979 has 4 divisors, whose sum is 28667976
The reverse of 21500979 is 97900512
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million five hundred thousand nine hundred seventy-nine
Scientific notation
2.1500979 × 10^7
Engineering notation
2.1500979 × 10^6
Prime Factorization
3 × 7166993
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21500979
Product of the distinct prime numbers
The prime factorization of 21500979 is 3 × 7166993.
Since it has a total of 2 prime factors.
7 , 10 , 9 , 44 , 565 , 717 , 2610 , 3620 , 30745 , 76651 , 921761 , 38699 , 9500813 , 3002835 , 89254207 , 88585306 , 65313851 , 825863989 , 8671160125 , 3771050647
n×2
43001958
n×3
64502937
n×4
86003916
n×5
107504895
n÷2
10750489.5
n÷3
7166993
n÷3
5375244.75
n÷5
4300195.8
n2
462292097958441
n3
9.9397326900704E+21
n4
2.1371398383482E+29
n5
4.5950598784387E+36
2 √n
4636.9148148311
3 √n
278.06910881279
4 √n
68.094895659154
5 √n
29.274645654769
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
-21500978
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 21500979 can be divided by 4 positive divisors.
The sum of these divisors (counting 21500979) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010000001010000110011
3
Ternary
1111110100210120
4
Quaternary
1102001100303
5
Quinary
21001012404
6
Senary
2044501323
8
Octal
122012063
10
Decimal
21500979
12
Duodecimal
724a843
16
Hexadecimal
1481433
20
Vigesimal
6e7c8j
36
Base36
csu9f
md5
ad00a9da3280c7005d66fc6cb60adc35
sha1
37cc5fc7bd046a4de0696928fd5a02cb4d61bcb8
sha256
02ec2546f3379a9a4ca0879297e744d70af1e0f439266654f74bb06700c8edd0
sha512
3b349beea9ae51c5a3eb3bb122929a2617aafa1de0ccc9247ef7c1eb07a8bc0812998c11108d253954b42f4becc30dc03ebc6b3fb73ae741dc5e133a350c5fcf
ripemd-160
43bd1b9979a8d2502dac451b05a9bcd949ff6e95
Diameter
43001958
Circumference
135094635.34278
Area
1.4523334587589E+15
Volume
4.1635454930362E+22
Surface area
5.8093338350354E+15
Circumference
135094635.34278
Perimeter
86003916
Area
462292097958441
Diagonal
30406976.106099
Surface area
2773752587750646
Volume
9.9397326900704E+21
Space diagonal
37240788.040471
Perimeter
64502937
Area
2.0017835040041E+14
Altitude
18620394.020236
Surface area
2.0017835040041E+14
Volume
1.1714087313884E+21
Height
10135658.702033