18208081 is an odd 8-digits prime number following 18208080
and preceding 18208082 . In scientific notation, it is written as 1.8208081 × 10^7.
The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors.
There are 18208080 positive integers (up to 18208081) that are relatively prime to 18208081.
18208081 has 2 divisors, whose sum is 18208082
The reverse of 18208081 is 18080281
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
eighteen million two hundred eight thousand eighty-one
Scientific notation
1.8208081 × 10^7
Engineering notation
1.8208081 × 10^6
Prime Factorization
18208081
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
18208081
Product of the distinct prime numbers
The prime factorization of 18208081 is 18208081.
Since it has a total of 1 prime factors.
6 , 9 , 80 , 86 , 105 , 902 , 2547 , 3786 , 42377 , 25260 , 325399 , 721921 , 6474173 , 7230137 , 24128281 , 94047245 , 47505450 , 851831582 , 9959935977 , 2305141507
n×2
36416162
n×3
54624243
n×4
72832324
n×5
91040405
n÷2
9104040.5
n÷3
6069360.3333333
n÷3
4552020.25
n÷5
3641616.2
n2
331534213702561
n3
6.0366018173675E+21
n4
1.0991493485538E+29
n5
2.0013400369564E+36
2 √n
4267.0928042404
3 √n
263.08013673086
4 √n
65.322988329074
5 √n
28.317364778759
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
18208082
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
9104041
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4267.0929214162
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999998901587
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18208081 can be divided by 2 positive divisors.
The sum of these divisors (counting 18208081) is 18208082, the average is 9104041.
Base
System
Value
2
Binary
1000101011101010101010001
3
Ternary
1021021001210101
4
Quaternary
1011131111101
5
Quinary
14130124311
6
Senary
1450132401
8
Octal
105352521
10
Decimal
18208081
12
Duodecimal
6121101
16
Hexadecimal
115d551
20
Vigesimal
5dg041
36
Base36
au9g1
md5
76b1486b81599530ce220accace4f664
sha1
16c5abe6d1ff9136c685faeea4ff74614d7815f6
sha256
7a812393139c844fa7b56d9c698c811faa284d45698f409845ba752a86be9e7c
sha512
563632c14b3b9ad19f7b963c208e25973a81d4cd11221f8e6d8514b7d18f8994fc2a70ed90eabe2aef64fd23d7ddc6aca8f39f9334d2188800e3d52558c7f38b
ripemd-160
577ab2ad89eaf3ea4345108bbaa2a2a8000a4878
Diameter
36416162
Circumference
114404747.01114
Area
1.0415454501816E+15
Volume
2.5286058562785E+22
Surface area
4.1661818007265E+15
Circumference
114404747.01114
Perimeter
72832324
Area
331534213702561
Diagonal
25750115.094988
Surface area
1989205282215366
Volume
6.0366018173675E+21
Space diagonal
31537321.40033
Perimeter
54624243
Area
1.4355852564506E+14
Altitude
15768660.700165
Surface area
1.4355852564506E+14
Volume
7.114203467306E+20
Height
8583371.6983293