21097813 is an odd 8-digits composite number following 21097812
and preceding 21097814 . In scientific notation, it is written as 2.1097813 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 19128000 positive integers (up to 21097813) that are relatively prime to 21097813.
21097813 has 8 divisors, whose sum is 23078016
The reverse of 21097813 is 31879012
Previous prime number is 401
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million ninety-seven thousand eight hundred thirteen
Scientific notation
2.1097813 × 10^7
Engineering notation
2.1097813 × 10^6
Prime Factorization
11 × 401 × 4783
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21097813
Product of the distinct prime numbers
The prime factorization of 21097813 is 11 × 401 × 4783.
Since it has a total of 3 prime factors.
8 , 5 , 38 , 27 , 571 , 217 , 8867 , 2514 , 26553 , 18956 , 831563 , 916529 , 1746058 , 1946839 , 54957803 , 1004271 , 756573180 , 602050491 , 4708824800 , 5300721890
n×2
42195626
n×3
63293439
n×4
84391252
n×5
105489065
n÷2
10548906.5
n÷3
7032604.3333333
n÷3
5274453.25
n÷5
4219562.6
n2
445117713382969
n3
9.3910102799415E+21
n4
1.9812977876728E+29
n5
4.1801050221635E+36
2 √n
4593.2355698353
3 √n
276.32010137171
4 √n
67.773413443881
5 √n
29.164026737943
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21097812
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21097813 can be divided by 8 positive divisors.
The sum of these divisors (counting 21097813) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011110110101010101
3
Ternary
1110200212202111
4
Quaternary
1100132311111
5
Quinary
20400112223
6
Senary
2032111021
8
Octal
120366525
10
Decimal
21097813
12
Duodecimal
7095471
16
Hexadecimal
141ed55
20
Vigesimal
6bh4ad
36
Base36
ck76d
md5
a79c97f01c19951a0aa8e09a95c8913b
sha1
7caa331cfdfe8b66d213e796d3fe6d8d7773ae9d
sha256
f4cdcb6afcd96b1e93a72704e2fc119b68bf1a9b7c00ad42695d6c51d061c94f
sha512
c262b45a1e3adec2efd81f21ce46baca1db30a56cb31c63436b98e91d761f4d4b76ab845b7b5b13e3307afeee1e515d8194d5d3c3232e0cc07e916e7da63d321
ripemd-160
134ffeae76cdd78f14bab3c2375149bf3efb4b54
Diameter
42195626
Circumference
132561468.65522
Area
1.3983785383466E+15
Volume
3.9336971873667E+22
Surface area
5.5935141533865E+15
Circumference
132561468.65522
Perimeter
84391252
Area
445117713382969
Diagonal
29836813.281011
Surface area
2670706280297814
Volume
9.3910102799415E+21
Space diagonal
36542484.044587
Perimeter
63293439
Area
1.9274162373205E+14
Altitude
18271242.022294
Surface area
1.9274162373205E+14
Volume
1.1067411751899E+21
Height
9945604.4270038