21095909 is an odd 8-digits composite number following 21095908
and preceding 21095910 . In scientific notation, it is written as 2.1095909 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 19985580 positive integers (up to 21095909) that are relatively prime to 21095909.
21095909 has 4 divisors, whose sum is 22206240
The reverse of 21095909 is 90959012
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million ninety-five thousand nine hundred nine
Scientific notation
2.1095909 × 10^7
Engineering notation
2.1095909 × 10^6
Prime Factorization
19 × 1110311
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21095909
Product of the distinct prime numbers
The prime factorization of 21095909 is 19 × 1110311.
Since it has a total of 2 prime factors.
8 , 4 , 65 , 4 , 393 , 297 , 969 , 861 , 16882 , 32147 , 50797 , 27875 , 2533232 , 351944 , 45084690 , 20797117 , 981161900 , 278106041 , 8259320391 , 6607816628
n×2
42191818
n×3
63287727
n×4
84383636
n×5
105479545
n÷2
10547954.5
n÷3
7031969.6666667
n÷3
5273977.25
n÷5
4219181.8
n2
445037376536281
n3
9.3884679970081E+21
n4
1.980582665143E+29
n5
4.1782191670833E+36
2 √n
4593.0283038536
3 √n
276.31178883081
4 √n
67.771884316828
5 √n
29.163500329717
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
-21095908
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 21095909 can be divided by 4 positive divisors.
The sum of these divisors (counting 21095909) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011110010111100101
3
Ternary
1110200210010222
4
Quaternary
1100132113211
5
Quinary
20400032114
6
Senary
2032054125
8
Octal
120362745
10
Decimal
21095909
12
Duodecimal
7094345
16
Hexadecimal
141e5e5
20
Vigesimal
6bgjf9
36
Base36
ck5ph
md5
dc7a7058d6927990eeac0625920f9f06
sha1
9a783cfb52288c2620851543ae1b6678a69c26bb
sha256
0b4b15dda2da850a740e11484e8fdd5a8e50b18775fc7d062506b14ea102a8a6
sha512
d574fa05bf838206bd43a2dd6b1bb8ea05faa6e7be89175460823e67ca314e06d281b738fc2f4f4f8145f53db41ebefc32dfdf86b5b4cf9bd0c7e0e59fd7993a
ripemd-160
9b79e119f933eb87a24580ff535c7ea4f8ebfa47
Diameter
42191818
Circumference
132549505.4704
Area
1.3981261526993E+15
Volume
3.9326322783818E+22
Surface area
5.592504610797E+15
Circumference
132549505.4704
Perimeter
84383636
Area
445037376536281
Diagonal
29834120.618389
Surface area
2670224259217686
Volume
9.3884679970081E+21
Space diagonal
36539186.21985
Perimeter
63287727
Area
1.92706836857E+14
Altitude
18269593.109925
Surface area
1.92706836857E+14
Volume
1.1064415642729E+21
Height
9944706.8727962