21904931 is an odd 8-digits composite number following 21904930
and preceding 21904932 . In scientific notation, it is written as 2.1904931 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 21395472 positive integers (up to 21904931) that are relatively prime to 21904931.
21904931 has 4 divisors, whose sum is 22414392
The reverse of 21904931 is 13940912
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million nine hundred four thousand nine hundred thirty-one
Scientific notation
2.1904931 × 10^7
Engineering notation
2.1904931 × 10^6
Prime Factorization
43 × 509417
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21904931
Product of the distinct prime numbers
The prime factorization of 21904931 is 43 × 509417.
Since it has a total of 2 prime factors.
4 , 2 , 51 , 83 , 207 , 341 , 5587 , 1387 , 53720 , 86999 , 840218 , 403938 , 9129992 , 4721354 , 60549697 , 30611616 , 912483088 , 580757540 , 7967795287 , 2116953217
n×2
43809862
n×3
65714793
n×4
87619724
n×5
109524655
n÷2
10952465.5
n÷3
7301643.6666667
n÷3
5476232.75
n÷5
4380986.2
n2
479826002114761
n3
1.051055546833E+22
n4
2.3023299230543E+29
n5
5.0432378103741E+36
2 √n
4680.2703981715
3 √n
279.79973349671
4 √n
68.412501768109
5 √n
29.383828319619
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
-21904930
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 21904931 can be divided by 4 positive divisors.
The sum of these divisors (counting 21904931) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010011100011111000100011
3
Ternary
1112012212220202
4
Quaternary
1103203320203
5
Quinary
21101424211
6
Senary
2101255415
8
Octal
123437043
10
Decimal
21904931
12
Duodecimal
740456b
16
Hexadecimal
14e3e23
20
Vigesimal
6gi26b
36
Base36
d1hyb
md5
8f2c1119ff12c6b125d6a5a5e5414da3
sha1
d01e01dd7d2509026f64de9942ae709670218d49
sha256
d36ec247543d8fc24e4f591d8093b4101bd23ab1e5bf19f2f8003757e5c5d473
sha512
c68447a39b2fc4f794aae0103b118b4e6b0df53c940090fa474a3e0e6bb1d759837f1eac022e5df356ba5e7d0c9259e68106cfe94b90b8067a13ed0a9501bd3a
ripemd-160
ba32bb6533146f47f6371ce27e80819f7adb4950
Diameter
43809862
Circumference
137632740.61398
Area
1.5074178432451E+15
Volume
4.4026511792603E+22
Surface area
6.0296713729804E+15
Circumference
137632740.61398
Perimeter
87619724
Area
479826002114761
Diagonal
30978250.503047
Surface area
2878956012688566
Volume
1.051055546833E+22
Space diagonal
37940453.428291
Perimeter
65714793
Area
2.0777075361385E+14
Altitude
18970226.714145
Surface area
2.0777075361385E+14
Volume
1.2386808409489E+21
Height
10326083.501016