20180208 is an even 8-digits composite number following 20180207
and preceding 20180209 . In scientific notation, it is written as 2.0180208 × 10^7.
The sum of its digits is 21. It has a total of 6 prime factors and 20 positive divisors.
There are 6726720 positive integers (up to 20180208) that are relatively prime to 20180208.
20180208 has 20 divisors, whose sum is 52132328
The reverse of 20180208 is 80208102
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred eighty thousand two hundred eight
Scientific notation
2.0180208 × 10^7
Engineering notation
2.0180208 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 3 × 420421
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2522526
Product of the distinct prime numbers
The prime factorization of 20180208 is 2 × 2 × 2 × 2 × 3 × 420421.
Since it has a total of 6 prime factors.
10 , 3 , 59 , 72 , 180 , 325 , 211 , 345 , 15214 , 8805 , 400118 , 56058 , 3112127 , 1382154 , 89993673 , 58813156 , 584930206 , 823994065 , 3453351220 , 1848446815
n×2
40360416
n×3
60540624
n×4
80720832
n×5
100901040
n÷2
10090104
n÷3
6726736
n÷3
5045052
n÷5
4036041.6
n2
407240794923264
n3
8.2182039476368E+21
n4
1.6584506504973E+29
n5
3.3467879084771E+36
2 √n
4492.2386401437
3 √n
272.2545915016
4 √n
67.024164598626
5 √n
28.905808931615
1 , 2 , 3 , 4 , 6 , 8 , 12 , 16 , 24 , 48 , 420421 , 840842 , 1261263 , 1681684 , 2522526 , 3363368 , 5045052 , 6726736 , 10090104 , 20180208
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20180207
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20180208 can be divided by 20 positive divisors.
The sum of these divisors (counting 20180208) is 1, the average is 0.05.
Base
System
Value
2
Binary
1001100111110110011110000
3
Ternary
1101222021001010
4
Quaternary
1030332303300
5
Quinary
20131231313
6
Senary
2000310520
8
Octal
114766360
10
Decimal
20180208
12
Duodecimal
6912440
16
Hexadecimal
133ecf0
20
Vigesimal
662aa8
36
Base36
c0j5c
md5
a53abfd9dc01e175d7fd0d0f71f4de1b
sha1
f34408a7c26e3c2313998023b4d3f4c3cec6402e
sha256
3e66c438a72ac2007bab5ae09894b1659b79f8e966162494fb05f89ef5391944
sha512
40d82baba14cb47b679cdd3f9fd8b651d820ae705a546b3abaa9dd580e08a5b9526fec3b5190bf04a49ea9d8a658b361aa5f6820d6d607c9c097ae4e8bf6fc96
ripemd-160
5b5843c3ac034136ddf54b64826527cde4784dc9
Diameter
40360416
Circumference
126795986.40143
Area
1.279384689573E+15
Volume
3.4424332196798E+22
Surface area
5.117538758292E+15
Circumference
126795986.40143
Perimeter
80720832
Area
407240794923264
Diagonal
28539123.84511
Surface area
2443444769539584
Volume
8.2182039476368E+21
Space diagonal
34953145.563308
Perimeter
60540624
Area
1.7634043693046E+14
Altitude
17476572.781654
Surface area
1.7634043693046E+14
Volume
9.6852462342467E+20
Height
9513041.2817033