18385985 is an odd 8-digits composite number following 18385984
and preceding 18385986 . In scientific notation, it is written as 1.8385985 × 10^7.
The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors.
There are 14625904 positive integers (up to 18385985) that are relatively prime to 18385985.
18385985 has 8 divisors, whose sum is 22187520
The reverse of 18385985 is 58958381
Previous prime number is 179
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighteen million three hundred eighty-five thousand nine hundred eighty-five
Scientific notation
1.8385985 × 10^7
Engineering notation
1.8385985 × 10^6
Prime Factorization
5 × 179 × 20543
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18385985
Product of the distinct prime numbers
The prime factorization of 18385985 is 5 × 179 × 20543.
Since it has a total of 3 prime factors.
9 , 5 , 56 , 1 , 725 , 517 , 9175 , 7586 , 94429 , 89336 , 175136 , 509357 , 4359181 , 4235968 , 12651875 , 96643466 , 867076214 , 570757772 , 1950962794 , 4686583471
n×2
36771970
n×3
55157955
n×4
73543940
n×5
91929925
n÷2
9192992.5
n÷3
6128661.6666667
n÷3
4596496.25
n÷5
3677197
n2
338044444420225
n3
6.2152800844436E+21
n4
1.1427404640338E+29
n5
2.1010409030618E+36
2 √n
4287.8881748478
3 √n
263.93417876203
4 √n
65.481968318369
5 √n
28.372485340509
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18385984
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18385985 can be divided by 8 positive divisors.
The sum of these divisors (counting 18385985) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110001000110001000001
3
Ternary
1021121002211102
4
Quaternary
1012020301001
5
Quinary
14201322420
6
Senary
1454024145
8
Octal
106106101
10
Decimal
18385985
12
Duodecimal
61a8055
16
Hexadecimal
1188c41
20
Vigesimal
5ei4j5
36
Base36
ay2pt
md5
153dcdb1b0ebdc797bef16d1f37af306
sha1
fab785170715fec36a046a07ab43db37223db0e4
sha256
74199d380c931c0adb30d820c6802b0b2a62e012d3f523c50957ee7ad1f64f14
sha512
be0f767f597a4cec5c9cc6dba409bd9cdb03066dd5ddf613e03121b1951ba020342319eda686fbd44fc5287f18357a7822300e9d1153ac444807213d309f7188
ripemd-160
1f533d742ec5474cbd2b73c30e26cc110fb4b947
Diameter
36771970
Circumference
115522550.81002
Area
1.0619979431774E+15
Volume
2.6034504337721E+22
Surface area
4.2479917727097E+15
Circumference
115522550.81002
Perimeter
73543940
Area
338044444420225
Diagonal
26001709.344588
Surface area
2028266666521350
Volume
6.2152800844436E+21
Space diagonal
31845460.167199
Perimeter
55157955
Area
1.4637753823806E+14
Altitude
15922730.0836
Surface area
1.4637753823806E+14
Volume
7.3247778244729E+20
Height
8667236.4481961