21386906 is an even 8-digits composite number following 21386905
and preceding 21386907 . In scientific notation, it is written as 2.1386906 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 10693452 positive integers (up to 21386906) that are relatively prime to 21386906.
21386906 has 4 divisors, whose sum is 32080362
The reverse of 21386906 is 60968312
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million three hundred eighty-six thousand nine hundred six
Scientific notation
2.1386906 × 10^7
Engineering notation
2.1386906 × 10^6
Prime Factorization
2 × 10693453
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21386906
Product of the distinct prime numbers
The prime factorization of 21386906 is 2 × 10693453.
Since it has a total of 2 prime factors.
10 , 5 , 38 , 18 , 711 , 810 , 5042 , 8567 , 2421 , 6039 , 40198 , 275213 , 4425827 , 8736025 , 46856530 , 38946676 , 193256968 , 163058319 , 5972222376 , 2621464031
n×2
42773812
n×3
64160718
n×4
85547624
n×5
106934530
n÷2
10693453
n÷3
7128968.6666667
n÷3
5346726.5
n÷5
4277381.2
n2
457399748252836
n3
9.7823654203071E+21
n4
2.0921452970176E+29
n5
4.4744514805657E+36
2 √n
4624.597928469
3 √n
277.57647325579
4 √n
68.004396390741
5 √n
29.243516316484
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
-21386905
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 21386906 can be divided by 4 positive divisors.
The sum of these divisors (counting 21386906) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001100101011010011010
3
Ternary
1111020120022122
4
Quaternary
1101211122122
5
Quinary
20433340111
6
Senary
2042221242
8
Octal
121453232
10
Decimal
21386906
12
Duodecimal
71b4822
16
Hexadecimal
146569a
20
Vigesimal
6dd756
36
Base36
cqe8q
md5
53526fc01ff01ba6bf7f65f26143d0f8
sha1
415c1cb2899cf4ca9a3189b7d806f8182ab533b2
sha256
5b05b75b08e6503c8af381fc87815703ec9adc0fa60680efc8e3d287d37ce50d
sha512
523c525c4afb44b406ff3c933e9ae4d4f93aed412c6c84c75a7aa4989f428db471215abc0040737f7ab2c73b9ba69ce534d8fb147cced50df9e3fd4f9eb6f5ae
ripemd-160
949f51ec21e0846c2207d2b87d4ffa5242ac9531
Diameter
42773812
Circumference
134377893.54523
Area
1.4369636888649E+15
Volume
4.0976276452223E+22
Surface area
5.7478547554597E+15
Circumference
134377893.54523
Perimeter
85547624
Area
457399748252836
Diagonal
30245652.522399
Surface area
2744398489517016
Volume
9.7823654203071E+21
Space diagonal
37043207.8087
Perimeter
64160718
Area
1.9805990083578E+14
Altitude
18521603.90435
Surface area
1.9805990083578E+14
Volume
1.1528628207907E+21
Height
10081884.174133