21531630 is an even 8-digits composite number following 21531629
and preceding 21531631 . In scientific notation, it is written as 2.1531630 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 5543552 positive integers (up to 21531630) that are relatively prime to 21531630.
21531630 has 8 divisors, whose sum is 32373000
The reverse of 21531630 is 03613512
Previous prime number is 435
Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million five hundred thirty-one thousand six hundred thirty
Scientific notation
2.1531630 × 10^7
Engineering notation
2.1531630 × 10^6
Prime Factorization
2 × 435 × 24749
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21531630
Product of the distinct prime numbers
The prime factorization of 21531630 is 2 × 435 × 24749.
Since it has a total of 3 prime factors.
2 , 9 , 77 , 37 , 233 , 275 , 7308 , 2264 , 45310 , 33665 , 666322 , 842382 , 5399876 , 63248 , 20481305 , 38465812 , 399853171 , 492370475 , 9318658014 , 2195788193
n×2
43063260
n×3
64594890
n×4
86126520
n×5
107658150
n÷2
10765815
n÷3
7177210
n÷3
5382907.5
n÷5
4306326
n2
463611090456900
n3
9.9823024636145E+21
n4
2.1493524319464E+29
n5
4.6279061304269E+36
2 √n
4640.2187448438
3 √n
278.20118108399
4 √n
68.119151087222
5 √n
29.282987469714
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
-21531629
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 21531630 can be divided by 8 positive divisors.
The sum of these divisors (counting 21531630) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001000101111101110
3
Ternary
1111111220211210
4
Quaternary
1102020233232
5
Quinary
21003003010
6
Senary
2045255250
8
Octal
122105756
10
Decimal
21531630
12
Duodecimal
7264526
16
Hexadecimal
1488bee
20
Vigesimal
6eb91a
36
Base36
cthwu
md5
9a20ca9f3970f0ed2aac1d109192721b
sha1
a03ecd530c971059cdee6803abdf65f254759270
sha256
b993abc4af81dd55f3ac0527535885dca320c16050bcd6dd8ff892f353ac4093
sha512
a5acaea6e24e2019283fac8d2ac17c7893216d9157c82fc20f685b09e033942a0c8077ae848d668fc0d91786bb5646f72a51809a50289a48d49b54e9326d70eb
ripemd-160
a084e88dc389e70252386f364e1559a98b4da2a2
Diameter
43063260
Circumference
135287221.25563
Area
1.4564771959022E+15
Volume
4.1813770780803E+22
Surface area
5.8259087836086E+15
Circumference
135287221.25563
Perimeter
86126520
Area
463611090456900
Diagonal
30450323.165999
Surface area
2781666542741400
Volume
9.9823024636145E+21
Space diagonal
37293877.129774
Perimeter
64594890
Area
2.0074949090594E+14
Altitude
18646938.564887
Surface area
2.0074949090594E+14
Volume
1.1764256273128E+21
Height
10150107.722