21490825 is an odd 8-digits composite number following 21490824
and preceding 21490826 . In scientific notation, it is written as 2.1490825 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 17192640 positive integers (up to 21490825) that are relatively prime to 21490825.
21490825 has 4 divisors, whose sum is 22350484
The reverse of 21490825 is 52809412
Previous prime number is 25
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million four hundred ninety thousand eight hundred twenty-five
Scientific notation
2.1490825 × 10^7
Engineering notation
2.1490825 × 10^6
Prime Factorization
25 × 859633
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21490825
Product of the distinct prime numbers
The prime factorization of 21490825 is 25 × 859633.
Since it has a total of 2 prime factors.
9 , 6 , 72 , 11 , 869 , 100 , 5831 , 6050 , 75966 , 46953 , 221808 , 17329 , 918145 , 94456 , 37016443 , 49289477 , 336802302 , 505902699 , 1819665259 , 2373330732
n×2
42981650
n×3
64472475
n×4
85963300
n×5
107454125
n÷2
10745412.5
n÷3
7163608.3333333
n÷3
5372706.25
n÷5
4298165
n2
461855559180625
n3
9.925656997628E+21
n4
2.1331055754605E+29
n5
4.5842198628745E+36
2 √n
4635.8197764797
3 √n
278.02532850674
4 √n
68.086854652566
5 √n
29.27188009772
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
-21490824
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 21490825 can be divided by 4 positive divisors.
The sum of these divisors (counting 21490825) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001111110110010001001
3
Ternary
1111102211212111
4
Quaternary
1101332302021
5
Quinary
21000201300
6
Senary
2044342321
8
Octal
121766211
10
Decimal
21490825
12
Duodecimal
72449a1
16
Hexadecimal
147ec89
20
Vigesimal
6e6715
36
Base36
csmfd
md5
f402e641d61403d259142e705e02f818
sha1
d096af3e509cd7433d242d1311a7f2b556562d0a
sha256
220c58547dbce69b936bf22c4c1c94204813df888aaad93782aeded8cee42d3e
sha512
cd6e1a0bed94d534e2ef15a77ffbb1ecbadc897208d40228f1d5cf7f400230f8458e90ff44415d6d1c391134384f9789016c53c99bb88219b97c2683f47febd6
ripemd-160
35d777addac28a284cc586b9b81091f44d58dc6c
Diameter
42981650
Circumference
135030835.87917
Area
1.4509620317415E+15
Volume
4.1576494807733E+22
Surface area
5.8038481269658E+15
Circumference
135030835.87917
Perimeter
85963300
Area
461855559180625
Diagonal
30392616.181587
Surface area
2771133355083750
Volume
9.925656997628E+21
Space diagonal
37223200.796571
Perimeter
64472475
Area
1.9998932356474E+14
Altitude
18611600.398286
Surface area
1.9998932356474E+14
Volume
1.1697498951257E+21
Height
10130872.060529