21083905 is an odd 8-digits composite number following 21083904
and preceding 21083906 . In scientific notation, it is written as 2.1083905 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 16733808 positive integers (up to 21083905) that are relatively prime to 21083905.
21083905 has 4 divisors, whose sum is 21117744
The reverse of 21083905 is 50938012
Previous prime number is 635
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million eighty-three thousand nine hundred five
Scientific notation
2.1083905 × 10^7
Engineering notation
2.1083905 × 10^6
Prime Factorization
635 × 33203
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21083905
Product of the distinct prime numbers
The prime factorization of 21083905 is 635 × 33203.
Since it has a total of 2 prime factors.
3 , 5 , 31 , 21 , 41 , 118 , 1697 , 8945 , 80795 , 19347 , 78722 , 914125 , 9448346 , 1028666 , 69150366 , 33057514 , 790220199 , 289688501 , 1788743999 , 87857439
n×2
42167810
n×3
63251715
n×4
84335620
n×5
105419525
n÷2
10541952.5
n÷3
7027968.3333333
n÷3
5270976.25
n÷5
4216781
n2
444531050049025
n3
9.3724504287839E+21
n4
1.9760785445769E+29
n5
4.1663452306397E+36
2 √n
4591.7213547862
3 √n
276.25936988345
4 √n
67.762241364836
5 √n
29.160180649433
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
-21083904
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 21083905 can be divided by 4 positive divisors.
The sum of these divisors (counting 21083905) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011011011100000001
3
Ternary
1110200011200101
4
Quaternary
1100123130001
5
Quinary
20344141110
6
Senary
2031522401
8
Octal
120333401
10
Decimal
21083905
12
Duodecimal
7089401
16
Hexadecimal
141b701
20
Vigesimal
6bf9f5
36
Base36
cjwg1
md5
8f5ffa8ae66fdbf7f760155ec78eba03
sha1
b62edac622bf2f178160ebdbd0f54522e723524c
sha256
69679d677dfa7e3f50127bdf08b69925a6301c8b48d90a0d1260dc5c9489a1c2
sha512
73377aa22959ecb10fe3ce393bd03caca4e54833ec2c9e709fd7c885c980daaef9f81abdd837f0b84d31cd08643cafe5915e86d457b217d42c1817b18b5b39fc
ripemd-160
139c3b9fe4eb85d47ec0221283339937c3773bd3
Diameter
42167810
Circumference
132474082.11397
Area
1.3965354811266E+15
Volume
3.9259228550936E+22
Surface area
5.5861419245063E+15
Circumference
132474082.11397
Perimeter
84335620
Area
444531050049025
Diagonal
29817144.398786
Surface area
2667186300294150
Volume
9.3724504287839E+21
Space diagonal
36518394.681955
Perimeter
63251715
Area
1.9248759105671E+14
Altitude
18259197.340978
Surface area
1.9248759105671E+14
Volume
1.1045538757546E+21
Height
9939048.1329286