21491325 is an odd 8-digits composite number following 21491324
and preceding 21491326 . In scientific notation, it is written as 2.1491325 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 11460960 positive integers (up to 21491325) that are relatively prime to 21491325.
21491325 has 8 divisors, whose sum is 22629048
The reverse of 21491325 is 52319412
Previous prime number is 25
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million four hundred ninety-one thousand three hundred twenty-five
Scientific notation
2.1491325 × 10^7
Engineering notation
2.1491325 × 10^6
Prime Factorization
81 × 25 × 10613
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21491325
Product of the distinct prime numbers
The prime factorization of 21491325 is 81 × 25 × 10613.
Since it has a total of 3 prime factors.
7 , 2 , 11 , 92 , 970 , 642 , 5911 , 7890 , 71211 , 93795 , 513072 , 162261 , 3179489 , 5483312 , 37017170 , 81975094 , 632640358 , 188504956 , 7444450316 , 6033248138
n×2
42982650
n×3
64473975
n×4
85965300
n×5
107456625
n÷2
10745662.5
n÷3
7163775
n÷3
5372831.25
n÷5
4298265
n2
461877050255625
n3
9.926349797085E+21
n4
2.1333040955284E+29
n5
4.5847531640831E+36
2 √n
4635.8737040605
3 √n
278.02748464525
4 √n
68.087250671918
5 √n
29.272016302857
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21491324
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491325 can be divided by 8 positive divisors.
The sum of these divisors (counting 21491325) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111110111001111101
3
Ternary
1111102212120000
4
Quaternary
1101332321331
5
Quinary
21000210300
6
Senary
2044344513
8
Octal
121767175
10
Decimal
21491325
12
Duodecimal
7245139
16
Hexadecimal
147ee7d
20
Vigesimal
6e6865
36
Base36
csmt9
md5
dd085b151b443bdffdd207040ebcbe3c
sha1
0c26f113af26ad42a9cd504e5df5f7bfdacb9641
sha256
048a8faa14d0f4e7b2455c96a5a8ec49b2ca175512a953918ff4e13e2c3e4d2b
sha512
1ec7b5779d43063766e15e3bc3bf99a49924a7af068fc40614444638cd914da2cc6036ad3ae0eb38f20360dc249e33c5420871f1663812f4b1ee61174f67e92f
ripemd-160
89f67bda8bc7de2905e2bb82db76aad84fe32fb8
Diameter
42982650
Circumference
135033977.47182
Area
1.4510295479448E+15
Volume
4.1579396799313E+22
Surface area
5.8041181917792E+15
Circumference
135033977.47182
Perimeter
85965300
Area
461877050255625
Diagonal
30393323.288368
Surface area
2771262301533750
Volume
9.926349797085E+21
Space diagonal
37224066.821975
Perimeter
64473975
Area
1.999986294732E+14
Altitude
18612033.410988
Surface area
1.999986294732E+14
Volume
1.1698315423247E+21
Height
10131107.762789