20781241 is an odd 8-digits composite number following 20781240
and preceding 20781242 . In scientific notation, it is written as 2.0781241 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19182672 positive integers (up to 20781241) that are relatively prime to 20781241.
20781241 has 4 divisors, whose sum is 22379812
The reverse of 20781241 is 14218702
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million seven hundred eighty-one thousand two hundred forty-one
Scientific notation
2.0781241 × 10^7
Engineering notation
2.0781241 × 10^6
Prime Factorization
13 × 1598557
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20781241
Product of the distinct prime numbers
The prime factorization of 20781241 is 13 × 1598557.
Since it has a total of 2 prime factors.
10 , 9 , 30 , 93 , 882 , 918 , 7720 , 6673 , 78906 , 75129 , 899654 , 796746 , 7973739 , 3270989 , 71523705 , 99830929 , 896923592 , 230710252 , 6106440781 , 3116201527
n×2
41562482
n×3
62343723
n×4
83124964
n×5
103906205
n÷2
10390620.5
n÷3
6927080.3333333
n÷3
5195310.25
n÷5
4156248.2
n2
431859977500081
n3
8.9745862706838E+21
n4
1.8650304016637E+29
n5
3.87576462493E+36
2 √n
4558.6446450672
3 √n
274.93107253226
4 √n
67.51773578155
5 √n
29.075975603069
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
-20781240
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 20781241 can be divided by 4 positive divisors.
The sum of these divisors (counting 20781241) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111010001100010111001
3
Ternary
1110002210111121
4
Quaternary
1033101202321
5
Quinary
20304444431
6
Senary
2021225241
8
Octal
117214271
10
Decimal
20781241
12
Duodecimal
6b62221
16
Hexadecimal
13d18b9
20
Vigesimal
69hd21
36
Base36
cdewp
md5
e06c02af5655800179f0740ec35f355e
sha1
47977c14796d15f2c35cbd1dd03018e1465f2bb0
sha256
e683968c3cec37c7631e8946af9620a90480a8b8f64d424384418e9046a6f6ba
sha512
d064601d366b57339ac9056daee248024c3fb952e2b4805111f776dfd8fc78bf167792f199035717413f79c07b4bea47658d206439e484e4f7fd514611554eb3
ripemd-160
f25d0588f53158ff8dddcc151dd0209f29e83136
Diameter
41562482
Circumference
130572388.11616
Area
1.3567281326937E+15
Volume
3.7592659062651E+22
Surface area
5.4269125307748E+15
Circumference
130572388.11616
Perimeter
83124964
Area
431859977500081
Diagonal
29389112.865144
Surface area
2591159865000486
Volume
8.9745862706838E+21
Space diagonal
35994165.256333
Perimeter
62343723
Area
1.8700085569642E+14
Altitude
17997082.628167
Surface area
1.8700085569642E+14
Volume
1.0576651350574E+21
Height
9796370.9550479