21132787 is an odd 8-digits composite number following 21132786
and preceding 21132788 . In scientific notation, it is written as 2.1132787 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 19385568 positive integers (up to 21132787) that are relatively prime to 21132787.
21132787 has 8 divisors, whose sum is 22900304
The reverse of 21132787 is 78723112
Previous prime number is 163
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million one hundred thirty-two thousand seven hundred eighty-seven
Scientific notation
2.1132787 × 10^7
Engineering notation
2.1132787 × 10^6
Prime Factorization
13 × 163 × 9973
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21132787
Product of the distinct prime numbers
The prime factorization of 21132787 is 13 × 163 × 9973.
Since it has a total of 3 prime factors.
9 , 4 , 96 , 11 , 199 , 712 , 7849 , 9506 , 68708 , 28888 , 609681 , 104820 , 3415069 , 2372457 , 18178550 , 92789968 , 848711718 , 584117374 , 7053527571 , 3228658063
n×2
42265574
n×3
63398361
n×4
84531148
n×5
105663935
n÷2
10566393.5
n÷3
7044262.3333333
n÷3
5283196.75
n÷5
4226557.4
n2
446594686387369
n3
9.4377903827561E+21
n4
1.9944681390943E+29
n5
4.2148670361767E+36
2 √n
4597.041113586
3 √n
276.47270303551
4 √n
67.801483122318
5 √n
29.173689417292
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
-21132786
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 21132787 can be divided by 8 positive divisors.
The sum of these divisors (counting 21132787) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100111010111110011
3
Ternary
1110202122201211
4
Quaternary
1100213113303
5
Quinary
20402222122
6
Senary
2032540551
8
Octal
120472763
10
Decimal
21132787
12
Duodecimal
70b1757
16
Hexadecimal
14275f3
20
Vigesimal
6c1bj7
36
Base36
cky5v
md5
a369ee9d6774af6c2d3cdfeabe2511ea
sha1
c8bcfb56e22af807888909576f08e43d0fc9224f
sha256
e5f3143b22cfd819c13f1d715257d14bdb8bc9262bc94540da1e18b187c72351
sha512
d61b317db7c5d791359a85b96af502ec4f88a3a3531c1c62fc2a6f855fec4de4a8904667d0568991ee3b1bfeb12ce484a260edb2666e17d4c0aceae5f3d06ec2
ripemd-160
f536c397e75108fcd34df2fea814af5a29d6632a
Diameter
42265574
Circumference
132781216.77816
Area
1.4030185858868E+15
Volume
3.9532923910116E+22
Surface area
5.6120743435472E+15
Circumference
132781216.77816
Perimeter
84531148
Area
446594686387369
Diagonal
29886273.986142
Surface area
2679568118324214
Volume
9.4377903827561E+21
Space diagonal
36603060.789531
Perimeter
63398361
Area
1.933811718033E+14
Altitude
18301530.394766
Surface area
1.933811718033E+14
Volume
1.1122542631773E+21
Height
9962091.3287139