21031666 is an even 8-digits composite number following 21031665
and preceding 21031667 . In scientific notation, it is written as 2.1031666 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 10515832 positive integers (up to 21031666) that are relatively prime to 21031666.
21031666 has 4 divisors, whose sum is 31547502
The reverse of 21031666 is 66613012
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million thirty-one thousand six hundred sixty-six
Scientific notation
2.1031666 × 10^7
Engineering notation
2.1031666 × 10^6
Prime Factorization
2 × 10515833
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21031666
Product of the distinct prime numbers
The prime factorization of 21031666 is 2 × 10515833.
Since it has a total of 2 prime factors.
2 , 1 , 31 , 25 , 550 , 670 , 3074 , 5839 , 29255 , 88435 , 281733 , 8139 , 3024543 , 8983149 , 30904059 , 25288366 , 58046282 , 125558448 , 7483285897 , 6088763211
n×2
42063332
n×3
63094998
n×4
84126664
n×5
105158330
n÷2
10515833
n÷3
7010555.3333333
n÷3
5257916.5
n÷5
4206333.2
n2
442330974735556
n3
9.3029573220927E+21
n4
1.9565669121051E+29
n5
4.1149861802045E+36
2 √n
4586.0294373238
3 √n
276.03102115791
4 √n
67.720229158825
5 √n
29.145716434963
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21031665
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031666 can be divided by 4 positive divisors.
The sum of these divisors (counting 21031666) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001110101011110010
3
Ternary
1110120112000121
4
Quaternary
1100032223302
5
Quinary
20341003131
6
Senary
2030440454
8
Octal
120165362
10
Decimal
21031666
12
Duodecimal
706312a
16
Hexadecimal
140eaf2
20
Vigesimal
6b8j36
36
Base36
cis4y
md5
3af84011e4b256a5f67c71fd1b115f15
sha1
f6080e7876e356f6607df65dd217b1c3e7b5bec6
sha256
1c8fb3d47b2c87bd565dcf45523dabdccec1ad75be78624c6e89bfa0c4dbecd5
sha512
4487a306e773bec293879fa63cd01e20df319efc41b7023428bbf7e128901434a3de6df035cac9792c288e83062b0e593111019a2994871102f8d6ecbc89eb8c
ripemd-160
0e146c85a01751b80b134ff70b5aef525f2bb768
Diameter
42063332
Circumference
132145854.79671
Area
1.3896237406844E+15
Volume
3.8968136506328E+22
Surface area
5.5584949627377E+15
Circumference
132145854.79671
Perimeter
84126664
Area
442330974735556
Diagonal
29743267.296501
Surface area
2653985848413336
Volume
9.3029573220927E+21
Space diagonal
36427914.079819
Perimeter
63094998
Area
1.9153493050086E+14
Altitude
18213957.039909
Surface area
1.9153493050086E+14
Volume
1.0963640345901E+21
Height
9914422.432167