18085905 is an odd 8-digits composite number following 18085904
and preceding 18085906 . In scientific notation, it is written as 1.8085905 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors.
There are 9645792 positive integers (up to 18085905) that are relatively prime to 18085905.
18085905 has 12 divisors, whose sum is 31348980
The reverse of 18085905 is 50958081
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighteen million eighty-five thousand nine hundred five
Scientific notation
1.8085905 × 10^7
Engineering notation
1.8085905 × 10^6
Prime Factorization
3 × 3 × 5 × 401909
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
6028635
Product of the distinct prime numbers
The prime factorization of 18085905 is 3 × 3 × 5 × 401909.
Since it has a total of 4 prime factors.
7 , 2 , 24 , 61 , 527 , 91 , 5047 , 6441 , 12964 , 77923 , 824177 , 311362 , 3628472 , 4894860 , 66969314 , 87604372 , 107358730 , 703047207 , 7355152878 , 3203343310
n×2
36171810
n×3
54257715
n×4
72343620
n×5
90429525
n÷2
9042952.5
n÷3
6028635
n÷3
4521476.25
n÷5
3617181
n2
327099959669025
n3
5.9158987960778E+21
n4
1.0699438361548E+29
n5
1.9350902576031E+36
2 √n
4252.7526379981
3 √n
262.49039420632
4 √n
65.213132404433
5 √n
28.279260535434
1 , 3 , 5 , 9 , 15 , 45 , 401909 , 1205727 , 2009545 , 3617181 , 6028635 , 18085905
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
-18085904
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 18085905 can be divided by 12 positive divisors.
The sum of these divisors (counting 18085905) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1000100111111100000010001
3
Ternary
1021000212012100
4
Quaternary
1010333200101
5
Quinary
14112222110
6
Senary
1443351013
8
Octal
104774021
10
Decimal
18085905
12
Duodecimal
6082469
16
Hexadecimal
113f811
20
Vigesimal
5d0ef5
36
Base36
arn69
md5
540a37e2b7d01de01d920b059a44bbc0
sha1
f417f5668f9073444a60dd4f382cb67648bedb0c
sha256
a130be653f2b6382f6f4c13099cb8d449375c1aa564023b6357ea98c50d332cb
sha512
d8f3f8a8d8d12c5ce76e0b401cdc0c0859a28599d33dde5fd32de812d66d67ca8af06ad17432121b63d712d6ad0938419e2b35467fbc13e3f24248d45308a3e4
ripemd-160
304e41ce4eba078b095c7d8707829441424f7a29
Diameter
36171810
Circumference
113637092.56305
Area
1.0276148302857E+15
Volume
2.4780458929518E+22
Surface area
4.1104593211429E+15
Circumference
113637092.56305
Perimeter
72343620
Area
327099959669025
Diagonal
25577332.138791
Surface area
1962599758014150
Volume
5.9158987960778E+21
Space diagonal
31325706.360864
Perimeter
54257715
Area
1.4163843732512E+14
Altitude
15662853.180432
Surface area
1.4163843732512E+14
Volume
6.9719535925333E+20
Height
8525777.3795971