21931439 is an odd 8-digits prime number following 21931438
and preceding 21931440 . In scientific notation, it is written as 2.1931439 × 10^7.
The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors.
There are 21931438 positive integers (up to 21931439) that are relatively prime to 21931439.
21931439 has 2 divisors, whose sum is 21931440
The reverse of 21931439 is 93413912
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 32 Digital Root 5
Name
twenty-one million nine hundred thirty-one thousand four hundred thirty-nine
Scientific notation
2.1931439 × 10^7
Engineering notation
2.1931439 × 10^6
Prime Factorization
21931439
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21931439 Product of the distinct prime numbers
The prime factorization of 21931439 is 21931439.
Since it has a total of 1 prime factors.
7 , 10 , 37 , 34 , 472 , 296 , 8095 , 3267 , 57007 , 42 , 593105 , 931898 , 271559 , 6759447 , 12827972 , 89373852 , 137357419 , 133939120 , 6413363817 , 2832588593
n×2
43862878
n×3
65794317
n×4
87725756
n×5
109657195
n÷2
10965719.5
n÷3
7310479.6666667
n÷3
5482859.75
n÷5
4386287.8
n2
480988016610721
n3
1.0548759346029E+22
n4
2.3134947212312E+29
n5
5.0738268355503E+36
2 √n4683.1014296084
3 √n279.91255347482
4 √n68.433189532626
5 √n29.390936579953
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21931440 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10965720 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4683.1015363752 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999088067 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21931439 can be divided by 2 positive divisors.
The sum of these divisors (counting 21931439) is 21931440, the average is 10965720.
Base
System
Value
2
Binary
1010011101010010110101111
3
Ternary
1112021020021112
4
Quaternary
1103222112233
5
Quinary
21103301224
6
Senary
2102022235
8
Octal
123522657
10
Decimal
21931439
12
Duodecimal
741797b
16
Hexadecimal
14ea5af
20
Vigesimal
6h18bj
36
Base36
d22en
md5
9b6948e22d145daea9974895f5bd8de3
sha1
5c9a7f749f8237f116cb6c9c71749cb9e40d9404
sha256
54a7622eef886538533bb49da596df1cfa3c2e59c22b8be665ac397dc352024d
sha512
b9600ec0dbc95ea0f604fd866be36af1e3c8c5d25812c4440a2b39113274e8b09783782ca827fde4b081edfa3f519e09d0e0f6338dd34f70075d45d8cfc3bdbc
ripemd-160
8b20418aa2360e82fc8996f099d816b89f3f9463
Diameter
43862878
Circumference
137799295.29011
Area
1.511068419449E+15
Volume
4.4186539821295E+22
Surface area
6.0442736777959E+15
Circumference
137799295.29011
Perimeter
87725756
Area
480988016610721
Diagonal
31015738.476158
Surface area
2885928099664326
Volume
1.0548759346029E+22
Space diagonal
37986366.631098
Perimeter
65794317
Area
2.0827392065039E+14
Altitude
18993183.315549
Surface area
2.0827392065039E+14
Volume
1.2431832111137E+21
Height
10338579.492053