21000965 is an odd 8-digits composite number following 21000964
and preceding 21000966 . In scientific notation, it is written as 2.1000965 × 10^7.
The sum of its digits is 23. It has a total of 4 prime factors and 12 positive divisors.
There are 16563456 positive integers (up to 21000965) that are relatively prime to 21000965.
21000965 has 12 divisors, whose sum is 25562124
The reverse of 21000965 is 56900012
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million nine hundred sixty-five
Scientific notation
2.1000965 × 10^7
Engineering notation
2.1000965 × 10^6
Prime Factorization
5 × 79 × 79 × 673
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
265835
Product of the distinct prime numbers
The prime factorization of 21000965 is 5 × 79 × 79 × 673.
Since it has a total of 4 prime factors.
5 , 5 , 2 , 49 , 199 , 3 , 2799 , 1000 , 27340 , 80788 , 572337 , 352658 , 387570 , 2384951 , 18404875 , 85056915 , 222145435 , 87761149 , 8726325849 , 3162361772
n×2
42001930
n×3
63002895
n×4
84003860
n×5
105004825
n÷2
10500482.5
n÷3
7000321.6666667
n÷3
5250241.25
n÷5
4200193
n2
441040530931225
n3
9.2622767536681E+21
n4
1.945167499241E+29
n5
4.0850394570697E+36
2 √n
4582.6809838783
3 √n
275.89664354454
4 √n
67.695501947163
5 √n
29.137202363144
1 , 5 , 79 , 395 , 673 , 3365 , 6241 , 31205 , 53167 , 265835 , 4200193 , 21000965
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
-21000964
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 21000965 can be divided by 12 positive divisors.
The sum of these divisors (counting 21000965) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000000111001100000101
3
Ternary
1110111221220112
4
Quaternary
1100013030011
5
Quinary
20334012330
6
Senary
2030042405
8
Octal
120071405
10
Decimal
21000965
12
Duodecimal
7049405
16
Hexadecimal
1407305
20
Vigesimal
6b5285
36
Base36
ci4g5
md5
b3cdc8b305f016b8ff249cbb096f7dec
sha1
e53480546de694e19db00f58ac73b783b6e92fc0
sha256
2a20d7653d80488649cae70241a0e3fffbb566faa3a0b12b2d39c95cff3b2db5
sha512
da1d0a9d9510e37090d3567b4e318c2d5ae14130af978102d113f81a41b57d1bf9b9ccf6e6cdb5e7ea4fa5c9391a4eaa8d6ed2524735f719a4fb654866ab75f5
ripemd-160
8129c179ebcd271fb3edfcbb6a1225f6d58372d7
Diameter
42001930
Circumference
131952954.72459
Area
1.3855696919089E+15
Volume
3.8797734139786E+22
Surface area
5.5422787676355E+15
Circumference
131952954.72459
Perimeter
84003860
Area
441040530931225
Diagonal
29699849.525923
Surface area
2646243185587350
Volume
9.2622767536681E+21
Space diagonal
36374738.387976
Perimeter
63002895
Area
1.9097615194251E+14
Altitude
18187369.193988
Surface area
1.9097615194251E+14
Volume
1.0915697836242E+21
Height
9899949.8419742