21132731 is an odd 8-digits composite number following 21132730
and preceding 21132732 . In scientific notation, it is written as 2.1132731 × 10^7.
The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors.
There are 19374120 positive integers (up to 21132731) that are relatively prime to 21132731.
21132731 has 8 divisors, whose sum is 22963200
The reverse of 21132731 is 13723112
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million one hundred thirty-two thousand seven hundred thirty-one
Scientific notation
2.1132731 × 10^7
Engineering notation
2.1132731 × 10^6
Prime Factorization
31 × 19 × 35879
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21132731
Product of the distinct prime numbers
The prime factorization of 21132731 is 31 × 19 × 35879.
Since it has a total of 3 prime factors.
1 , 8 , 56 , 52 , 746 , 994 , 2863 , 2151 , 29953 , 86172 , 424760 , 477274 , 9142737 , 8697262 , 38387906 , 89166840 , 277818409 , 541648722 , 5527139335 , 4300907009
n×2
42265462
n×3
63398193
n×4
84530924
n×5
105663655
n÷2
10566365.5
n÷3
7044243.6666667
n÷3
5283182.75
n÷5
4226546.2
n2
446592319518361
n3
9.4377153550476E+21
n4
1.9944469985279E+29
n5
4.2148111913647E+36
2 √n
4597.0350227076
3 √n
276.47245882596
4 √n
67.801438205303
5 √n
29.173673955741
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
-21132730
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 21132731 can be divided by 8 positive divisors.
The sum of these divisors (counting 21132731) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100111010110111011
3
Ternary
1110202122122202
4
Quaternary
1100213112323
5
Quinary
20402221411
6
Senary
2032540415
8
Octal
120472673
10
Decimal
21132731
12
Duodecimal
70b170b
16
Hexadecimal
14275bb
20
Vigesimal
6c1bgb
36
Base36
cky4b
md5
242307f481dd8cefa7073762cb6fa3bc
sha1
e50dbe72423b92a95013c9a37295cec7995e298e
sha256
cb29cc5e09fa8876627b36c97afecbc03f9cacfdcfd9e234b4be616003ea2261
sha512
e36e2b304785a577c32a56965c69ba88f7b475fbb176a854eae4dd69ae9fce038b56972d94be67811ffe4d03f4ba50466a52bbfc7ba4334324df0ff46a0c94f0
ripemd-160
4adbc30cf804acb78c95f6b2bea8b44bc00fd843
Diameter
42265462
Circumference
132780864.91978
Area
1.4030111501485E+15
Volume
3.9532609634785E+22
Surface area
5.612044600594E+15
Circumference
132780864.91978
Perimeter
84530924
Area
446592319518361
Diagonal
29886194.790182
Surface area
2679553917110166
Volume
9.4377153550476E+21
Space diagonal
36602963.794686
Perimeter
63398193
Area
1.9338014691896E+14
Altitude
18301481.897343
Surface area
1.9338014691896E+14
Volume
1.1122454210771E+21
Height
9962064.9300608