21491260 is an even 8-digits composite number following 21491259
and preceding 21491261 . In scientific notation, it is written as 2.1491260 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 7368384 positive integers (up to 21491260) that are relatively prime to 21491260.
21491260 has 12 divisors, whose sum is 38684520
The reverse of 21491260 is 06219412
Previous prime number is 35
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million four hundred ninety-one thousand two hundred sixty
Scientific notation
2.1491260 × 10^7
Engineering notation
2.1491260 × 10^6
Prime Factorization
2 × 2 × 35 × 153509
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10745630
Product of the distinct prime numbers
The prime factorization of 21491260 is 2 × 2 × 35 × 153509.
Since it has a total of 4 prime factors.
10 , 9 , 45 , 19 , 938 , 212 , 6682 , 3960 , 6372 , 1868 , 41475 , 206550 , 4740377 , 2005063 , 88266636 , 80804085 , 322905542 , 333754908 , 5079816143 , 4097247609
n×2
42982520
n×3
64473780
n×4
85965040
n×5
107456300
n÷2
10745630
n÷3
7163753.3333333
n÷3
5372815
n÷5
4298252
n2
461874256387600
n3
9.9262597313326E+21
n4
2.133278287136E+29
n5
4.5846838321194E+36
2 √n
4635.8666935105
3 √n
278.02720434914
4 √n
68.087199189793
5 √n
29.271998596333
1 , 2 , 4 , 35 , 70 , 140 , 153509 , 307018 , 614036 , 5372815 , 10745630 , 21491260
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21491259
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491260 can be divided by 12 positive divisors.
The sum of these divisors (counting 21491260) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010001111110111000111100
3
Ternary
1111102212110121
4
Quaternary
1101332320330
5
Quinary
21000210020
6
Senary
2044344324
8
Octal
121767074
10
Decimal
21491260
12
Duodecimal
72450a4
16
Hexadecimal
147ee3c
20
Vigesimal
6e6830
36
Base36
csmrg
md5
3297ea10e04f01d9e486036cdb6de5bf
sha1
06a9763b4674f9adc026f54da66431821f6734b2
sha256
182234d2309b335760ecb9f22d1c740e5ba8ecc46d445050013d1fbfe62e991d
sha512
3598984b3d4cdf4ebdcc993a51a1fbc99f2caee8f7ee3d12baf594dcb68d4bbf724bb68ce5fc18f15d3dc8588d5d29e39c30508243b42a281dcf54f7a85ea85d
ripemd-160
b302f42b771c72987ed688921d16f7b68f7e5c7f
Diameter
42982520
Circumference
135033569.06478
Area
1.4510207707495E+15
Volume
4.1579019532771E+22
Surface area
5.8040830829981E+15
Circumference
135033569.06478
Perimeter
85965040
Area
461874256387600
Diagonal
30393231.364486
Surface area
2771245538325600
Volume
9.9262597313326E+21
Space diagonal
37223954.238673
Perimeter
64473780
Area
1.9999741969285E+14
Altitude
18611977.119336
Surface area
1.9999741969285E+14
Volume
1.169820927974E+21
Height
10131077.121495