21132891 is an odd 8-digits composite number following 21132890
and preceding 21132892 . In scientific notation, it is written as 2.1132891 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 13004784 positive integers (up to 21132891) that are relatively prime to 21132891.
21132891 has 8 divisors, whose sum is 25287360
The reverse of 21132891 is 19823112
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million one hundred thirty-two thousand eight hundred ninety-one
Scientific notation
2.1132891 × 10^7
Engineering notation
2.1132891 × 10^6
Prime Factorization
9 × 13 × 180623
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21132891
Product of the distinct prime numbers
The prime factorization of 21132891 is 9 × 13 × 180623.
Since it has a total of 3 prime factors.
9 , 5 , 72 , 65 , 523 , 97 , 2715 , 8672 , 3516 , 67896 , 515653 , 555651 , 9437972 , 7273248 , 64959492 , 66391477 , 978743160 , 657129101 , 3776772133 , 3151196583
n×2
42265782
n×3
63398673
n×4
84531564
n×5
105664455
n÷2
10566445.5
n÷3
7044297
n÷3
5283222.75
n÷5
4226578.2
n2
446599082017881
n3
9.4379297209839E+21
n4
1.9945074005921E+29
n5
4.2149707495407E+36
2 √n
4597.052425196
3 √n
276.47315656638
4 √n
67.801566539395
5 √n
29.173718131514
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
-21132890
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 21132891 can be divided by 8 positive divisors.
The sum of these divisors (counting 21132891) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100111011001011011
3
Ternary
1110202122212200
4
Quaternary
1100213121123
5
Quinary
20402223031
6
Senary
2032541243
8
Octal
120473133
10
Decimal
21132891
12
Duodecimal
70b1823
16
Hexadecimal
142765b
20
Vigesimal
6c1c4b
36
Base36
cky8r
md5
c6122ee79fa80ce5806195291ca5191c
sha1
59471af9097c54d12eb9c02af202d1b4132ca1a4
sha256
0abf57d07fbb61323a763d7f81267cfcc9583cbcde703c99f574c00a3d73b78f
sha512
52d3f94c36b66ff9ea645cffd6b5a1710df47bcd58e76c8568e50ae38aeb8af74df2a3450c5d4e3669cd7ca549f9b9aeea433c56a446298ea408ac7c138fcbc2
ripemd-160
68eee7bd22d741a2a4a59264a8a5351486063320
Diameter
42265782
Circumference
132781870.22943
Area
1.4030323951673E+15
Volume
3.953350756872E+22
Surface area
5.6121295806693E+15
Circumference
132781870.22943
Perimeter
84531564
Area
446599082017881
Diagonal
29886421.064352
Surface area
2679594492107286
Volume
9.4379297209839E+21
Space diagonal
36603240.922815
Perimeter
63398673
Area
1.9338307516715E+14
Altitude
18301620.461408
Surface area
1.9338307516715E+14
Volume
1.112270684345E+21
Height
9962140.3547841