20921923 is an odd 8-digits composite number following 20921922
and preceding 20921924 . In scientific notation, it is written as 2.0921923 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 19019920 positive integers (up to 20921923) that are relatively prime to 20921923.
20921923 has 4 divisors, whose sum is 22823928
The reverse of 20921923 is 32912902
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million nine hundred twenty-one thousand nine hundred twenty-three
Scientific notation
2.0921923 × 10^7
Engineering notation
2.0921923 × 10^6
Prime Factorization
11 × 1901993
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921923
Product of the distinct prime numbers
The prime factorization of 20921923 is 11 × 1901993.
Since it has a total of 2 prime factors.
3 , 2 , 95 , 78 , 650 , 648 , 9800 , 9953 , 40464 , 67859 , 988879 , 429590 , 9574316 , 3481873 , 64180005 , 46129243 , 655905975 , 257662405 , 9455548968 , 6102198639
n×2
41843846
n×3
62765769
n×4
83687692
n×5
104609615
n÷2
10460961.5
n÷3
6973974.3333333
n÷3
5230480.75
n÷5
4184384.6
n2
437726862017929
n3
9.1580877021707E+21
n4
1.9160480573206E+29
n5
4.0087409919562E+36
2 √n
4574.0488628785
3 √n
275.55007472502
4 √n
67.631714918953
5 √n
29.115236345449
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
-20921922
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 20921923 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921923) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011111001000011
3
Ternary
1110100221111001
4
Quaternary
1033303321003
5
Quinary
20324000143
6
Senary
2024232431
8
Octal
117637103
10
Decimal
20921923
12
Duodecimal
700b717
16
Hexadecimal
13f3e43
20
Vigesimal
6af4g3
36
Base36
cgfgj
md5
17aba06ccaf6ce6ffdc2bb1fd12ee075
sha1
af9093303ee42ec1df72e3effaf1bed160667123
sha256
3eb480ff83f9866f4f32d5474156f1d061018dbb3c862057245816b891399b2e
sha512
e2ccda26c400f88c5bdbdcb8f82fad5f84be801f009441c761ad5cbbc69f0d37642d72b32d7bbbade86787696ef97804aaa25b77dc172455489b2e6f4e212307
ripemd-160
a5e532280af2baa2961f7fb709f9aa078d7d6d4f
Diameter
41843846
Circumference
131456319.19154
Area
1.3751594939944E+15
Volume
3.8361308061427E+22
Surface area
5.5006379759778E+15
Circumference
131456319.19154
Perimeter
83687692
Area
437726862017929
Diagonal
29588067.257526
Surface area
2626361172107574
Volume
9.1580877021707E+21
Space diagonal
36237833.628044
Perimeter
62765769
Area
1.8954129121319E+14
Altitude
18118916.814022
Surface area
1.8954129121319E+14
Volume
1.079290986151E+21
Height
9862689.0858419