21131187 is an odd 8-digits composite number following 21131186
and preceding 21131188 . In scientific notation, it is written as 2.1131187 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 10329600 positive integers (up to 21131187) that are relatively prime to 21131187.
21131187 has 8 divisors, whose sum is 21829392
The reverse of 21131187 is 78113112
Previous prime number is 77
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million one hundred thirty-one thousand one hundred eighty-seven
Scientific notation
2.1131187 × 10^7
Engineering notation
2.1131187 × 10^6
Prime Factorization
51 × 77 × 5381
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21131187
Product of the distinct prime numbers
The prime factorization of 21131187 is 51 × 77 × 5381.
Since it has a total of 3 prime factors.
9 , 2 , 34 , 45 , 799 , 515 , 2344 , 8328 , 59886 , 95590 , 860951 , 674383 , 4748852 , 269050 , 97283571 , 85186189 , 253052116 , 981524966 , 5522170210 , 1384567033
n×2
42262374
n×3
63393561
n×4
84524748
n×5
105655935
n÷2
10565593.5
n÷3
7043729
n÷3
5282796.75
n÷5
4226237.4
n2
446527064028969
n3
9.4356468905571E+21
n4
1.9938641891033E+29
n5
4.2132717032545E+36
2 √n
4596.8670853093
3 √n
276.46572544994
4 √n
67.800199743875
5 √n
29.173247645776
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
-21131186
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 21131187 can be divided by 8 positive divisors.
The sum of these divisors (counting 21131187) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100110111110110011
3
Ternary
1110202120112120
4
Quaternary
1100212332303
5
Quinary
20402144222
6
Senary
2032525323
8
Octal
120467663
10
Decimal
21131187
12
Duodecimal
70b0843
16
Hexadecimal
1426fb3
20
Vigesimal
6c17j7
36
Base36
ckwxf
md5
1a85e582bec607110dd0fe38763adb4f
sha1
edbf2574fcb1504f4148cac469b0cbcb6cd1af40
sha256
f747d2352c2557339e15aac621893aea1cbd0e83bf95369594b49d1ddd424ee6
sha512
7b038d2e2105d32d4b57fa5d2871e3792162778292e4de5ec823dfd8c8f9c32242fafd01496b90a3cd955f41ad1085cb19fe5f2db92be2830bc6042416c83e9d
ripemd-160
94aa6f29617ad3fe85e07bdd63cfe6bb08ef87ad
Diameter
42262374
Circumference
132771163.68166
Area
1.4028061439824E+15
Volume
3.9523945270989E+22
Surface area
5.6112245759297E+15
Circumference
132771163.68166
Perimeter
84524748
Area
446527064028969
Diagonal
29884011.244442
Surface area
2679162384173814
Volume
9.4356468905571E+21
Space diagonal
36600289.508239
Perimeter
63393561
Area
1.9335189046318E+14
Altitude
18300144.754119
Surface area
1.9335189046318E+14
Volume
1.1120016501991E+21
Height
9961337.0814807