20081284 is an even 8-digits composite number following 20081283
and preceding 20081285 . In scientific notation, it is written as 2.0081284 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 9449984 positive integers (up to 20081284) that are relatively prime to 20081284.
20081284 has 12 divisors, whose sum is 37209564
The reverse of 20081284 is 48218002
Previous prime number is 17
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million eighty-one thousand two hundred eighty-four
Scientific notation
2.0081284 × 10^7
Engineering notation
2.0081284 × 10^6
Prime Factorization
2 × 2 × 17 × 295313
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10040642
Product of the distinct prime numbers
The prime factorization of 20081284 is 2 × 2 × 17 × 295313.
Since it has a total of 4 prime factors.
1 , 4 , 61 , 26 , 487 , 354 , 8147 , 7806 , 21970 , 74369 , 226921 , 567387 , 7019576 , 5306135 , 39891730 , 59794795 , 176166734 , 778352906 , 5078971172 , 2886143375
n×2
40162568
n×3
60243852
n×4
80325136
n×5
100406420
n÷2
10040642
n÷3
6693761.3333333
n÷3
5020321
n÷5
4016256.8
n2
403257967088656
n3
8.09793776237E+21
n4
1.6261698802048E+29
n5
3.2655579196638E+36
2 √n
4481.2145675029
3 √n
271.80899580614
4 √n
66.941874544286
5 √n
28.877413766503
1 , 2 , 4 , 17 , 34 , 68 , 295313 , 590626 , 1181252 , 5020321 , 10040642 , 20081284
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
-20081283
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 20081284 can be divided by 12 positive divisors.
The sum of these divisors (counting 20081284) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001100100110101010000100
3
Ternary
1101210020100021
4
Quaternary
1030212222010
5
Quinary
20120100114
6
Senary
1554224524
8
Octal
114465204
10
Decimal
20081284
12
Duodecimal
6885144
16
Hexadecimal
1326a84
20
Vigesimal
65a344
36
Base36
byetg
md5
7ef9e4048710e8870292f06fd25dc53a
sha1
6f037428cecfe5964e1a30f28ebac54ec936de01
sha256
4977de4256175afb48d2eb69981dd49365c57b4e2a982c2e0546fdc4b1545a31
sha512
31315a573f9001885735aacb169c17c3bc525a244dc0a87066f2e9c3cb5006d62b7534fe6adfa6bb6387f8426baa14a907fe12eddff0157eb108c05ad720cb4a
ripemd-160
911a5f5d26f3ebca07d592ba03f5276663c5a46a
Diameter
40162568
Circumference
126174428.5781
Area
1.2668722669073E+15
Volume
3.3920562377985E+22
Surface area
5.0674890676291E+15
Circumference
126174428.5781
Perimeter
80325136
Area
403257967088656
Diagonal
28399224.182666
Surface area
2419547802531936
Volume
8.09793776237E+21
Space diagonal
34781804.16922
Perimeter
60243852
Area
1.7461582188862E+14
Altitude
17390902.08461
Surface area
1.7461582188862E+14
Volume
9.543511175664E+20
Height
9466408.0608886