21531185 is an odd 8-digits composite number following 21531184
and preceding 21531186 . In scientific notation, it is written as 2.1531185 × 10^7.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 15899904 positive integers (up to 21531185) that are relatively prime to 21531185.
21531185 has 8 divisors, whose sum is 27825000
The reverse of 21531185 is 58113512
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million five hundred thirty-one thousand one hundred eighty-five
Scientific notation
2.1531185 × 10^7
Engineering notation
2.1531185 × 10^6
Prime Factorization
5 × 13 × 331249
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21531185
Product of the distinct prime numbers
The prime factorization of 21531185 is 5 × 13 × 331249.
Since it has a total of 3 prime factors.
10 , 2 , 66 , 11 , 894 , 503 , 698 , 9504 , 98150 , 55233 , 416433 , 997804 , 5376104 , 1065965 , 16479423 , 58425737 , 323626282 , 918169351 , 6798239182 , 7261779129
n×2
43062370
n×3
64593555
n×4
86124740
n×5
107655925
n÷2
10765592.5
n÷3
7177061.6666667
n÷3
5382796.25
n÷5
4306237
n2
463591927504225
n3
9.9816835556001E+21
n4
2.1491747524708E+29
n5
4.6274279192779E+36
2 √n
4640.1707942704
3 √n
278.19926451785
4 √n
68.118799125281
5 √n
29.282866428835
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
-21531184
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 21531185 can be divided by 8 positive divisors.
The sum of these divisors (counting 21531185) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001000101000110001
3
Ternary
1111111220020022
4
Quaternary
1102020220301
5
Quinary
21002444220
6
Senary
2045253225
8
Octal
122105061
10
Decimal
21531185
12
Duodecimal
7264215
16
Hexadecimal
1488a31
20
Vigesimal
6eb7j5
36
Base36
cthkh
md5
ff78168b65f26720381ca4a960b36b99
sha1
73dcad36fe8ffc9ec3e6f2085e34fab56b77ef5f
sha256
dd8de12dbcd9b24ec2f34fcfba89ac4e721df80d172e277e936a00a322bda9eb
sha512
2117e416fa8263c8455b39ecd8dcf62b30fbfea48f73c4d31b7e2a3646f4534db6aba1db7cc4cb158ba5aac650a80047e7400a3927e29d57fe27b6d4ed363d34
ripemd-160
24ffeef6971599c216ac6d008a2b62272fd4d06e
Diameter
43062370
Circumference
135284425.23817
Area
1.4564169937108E+15
Volume
4.1811178304975E+22
Surface area
5.8256679748432E+15
Circumference
135284425.23817
Perimeter
86124740
Area
463591927504225
Diagonal
30449693.840964
Surface area
2781551565025350
Volume
9.9816835556001E+21
Space diagonal
37293106.367165
Perimeter
64593555
Area
2.0074119310403E+14
Altitude
18646553.183582
Surface area
2.0074119310403E+14
Volume
1.1763526883038E+21
Height
10149897.946988