21931429 is an odd 8-digits composite number following 21931428
and preceding 21931430 . In scientific notation, it is written as 2.1931429 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 20244384 positive integers (up to 21931429) that are relatively prime to 21931429.
21931429 has 4 divisors, whose sum is 23618476
The reverse of 21931429 is 92413912
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million nine hundred thirty-one thousand four hundred twenty-nine
Scientific notation
2.1931429 × 10^7
Engineering notation
2.1931429 × 10^6
Prime Factorization
13 × 1687033
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21931429
Product of the distinct prime numbers
The prime factorization of 21931429 is 13 × 1687033.
Since it has a total of 2 prime factors.
10 , 3 , 24 , 73 , 933 , 522 , 4527 , 482 , 4584 , 6404 , 761387 , 124065 , 2918943 , 6108804 , 90899854 , 10544040 , 478890588 , 842902784 , 1922790874 , 3228515556
n×2
43862858
n×3
65794287
n×4
87725716
n×5
109657145
n÷2
10965714.5
n÷3
7310476.3333333
n÷3
5482857.25
n÷5
4386285.8
n2
480987577982041
n3
1.0548744916395E+22
n4
2.3134905017303E+29
n5
5.0738152680872E+36
2 √n
4683.1003619397
3 √n
279.91251093123
4 √n
68.433181731816
5 √n
29.390933899696
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
-21931428
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 21931429 can be divided by 4 positive divisors.
The sum of these divisors (counting 21931429) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010011101010010110100101
3
Ternary
1112021020021011
4
Quaternary
1103222112211
5
Quinary
21103301204
6
Senary
2102022221
8
Octal
123522645
10
Decimal
21931429
12
Duodecimal
7417971
16
Hexadecimal
14ea5a5
20
Vigesimal
6h18b9
36
Base36
d22ed
md5
66daf3f757a3cd796248f558ddd098ca
sha1
8f3e5e9eb8b67e50d8496c0d4de7e29414e0f884
sha256
8c2a23ea438e89ca0389b8d53e7a27bd74acb314421c6a47b5b18b53cb405a8b
sha512
87faf55fcc0f729131b2d56973db9cc7c8ddbe5799c8d2b53dd7a92cc7e30389ddac7c5705b99e48cf3a930ef4699d0f2c32cda73a60e2659c0d6a0cbd7b11cf
ripemd-160
d70a298933ce734d9495e8ff26b7fa01564ae782
Diameter
43862858
Circumference
137799232.45825
Area
1.5110670414563E+15
Volume
4.4186479378586E+22
Surface area
6.0442681658253E+15
Circumference
137799232.45825
Perimeter
87725716
Area
480987577982041
Diagonal
31015724.334023
Surface area
2885925467892246
Volume
1.0548744916395E+22
Space diagonal
37986349.310589
Perimeter
65794287
Area
2.082737307186E+14
Altitude
18993174.655295
Surface area
2.082737307186E+14
Volume
1.243181510565E+21
Height
10338574.778008