21491872 is an even 8-digits composite number following 21491871
and preceding 21491873 . In scientific notation, it is written as 2.1491872 × 10^7.
The sum of its digits is 34. It has a total of 7 prime factors and 24 positive divisors.
There are 10483200 positive integers (up to 21491872) that are relatively prime to 21491872.
21491872 has 24 divisors, whose sum is 43346772
The reverse of 21491872 is 27819412
Previous prime number is 41
Is Prime? no
Number parity even
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million four hundred ninety-one thousand eight hundred seventy-two
Scientific notation
2.1491872 × 10^7
Engineering notation
2.1491872 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 2 × 41 × 16381
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
7
Total number of prime factors
rad
Radical
1343242
Product of the distinct prime numbers
The prime factorization of 21491872 is 2 × 2 × 2 × 2 × 2 × 41 × 16381.
Since it has a total of 7 prime factors.
1 , 6 , 64 , 99 , 70 , 769 , 6181 , 8455 , 31380 , 88934 , 672921 , 485818 , 2105611 , 5047945 , 98915053 , 30198611 , 376179305 , 516957011 , 4453178271 , 2223661205
n×2
42983744
n×3
64475616
n×4
85967488
n×5
107459360
n÷2
10745936
n÷3
7163957.3333333
n÷3
5372968
n÷5
4298374.4
n2
461900562064384
n3
9.9271077566158E+21
n4
2.1335212923539E+29
n5
4.5853366524545E+36
2 √n
4635.9327001155
3 √n
278.02984342248
4 √n
68.087683909173
5 √n
29.272165308374
1 , 2 , 4 , 8 , 16 , 32 , 41 , 82 , 164 , 328 , 656 , 1312 , 16381 , 32762 , 65524 , 131048 , 262096 , 524192 , 671621 , 1343242 , 2686484 , 5372968 , 10745936 , 21491872
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21491871
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491872 can be divided by 24 positive divisors.
The sum of these divisors (counting 21491872) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1010001111111000010100000
3
Ternary
1111102220022021
4
Quaternary
1101333002200
5
Quinary
21000214442
6
Senary
2044351224
8
Octal
121770240
10
Decimal
21491872
12
Duodecimal
7245514
16
Hexadecimal
147f0a0
20
Vigesimal
6e69dc
36
Base36
csn8g
md5
8fe499440015471adbf57c3ec35f8d46
sha1
5850f18bbabd55b2d0a98729a570fdeeefcf35dd
sha256
8e677271d569211f947a5587c0f6540280aa9398bf9b190cc3530ce5393e7c7b
sha512
94cd3259649b0dfd7db39cddd3066b10bb2e5b6b42b24d5c1bba7cef76fc17c1e0333eb8dbe2ce01e2f73c54adc69c0a56f723d7d0bbe667d6730116280e64ed
ripemd-160
15f7a02810baf79e5dc3e118936ecf6c36261e55
Diameter
42983744
Circumference
135037414.37418
Area
1.4511034124705E+15
Volume
4.1582571732771E+22
Surface area
5.8044136498819E+15
Circumference
135037414.37418
Perimeter
85967488
Area
461900562064384
Diagonal
30394096.863187
Surface area
2771403372386304
Volume
9.9271077566158E+21
Space diagonal
37225014.253767
Perimeter
64475616
Area
2.0000881038503E+14
Altitude
18612507.126883
Surface area
2.0000881038503E+14
Volume
1.1699208687121E+21
Height
10131365.621062