18984985 is an odd 8-digits composite number following 18984984
and preceding 18984986 . In scientific notation, it is written as 1.8984985 × 10^7.
The sum of its digits is 52. It has a total of 2 prime factors and 4 positive divisors.
There are 15187984 positive integers (up to 18984985) that are relatively prime to 18984985.
18984985 has 4 divisors, whose sum is 22781988
The reverse of 18984985 is 58948981
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 52
Digital Root 7
Name
eighteen million nine hundred eighty-four thousand nine hundred eighty-five
Scientific notation
1.8984985 × 10^7
Engineering notation
1.8984985 × 10^6
Prime Factorization
5 × 3796997
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18984985
Product of the distinct prime numbers
The prime factorization of 18984985 is 5 × 3796997.
Since it has a total of 2 prime factors.
7 , 7 , 32 , 33 , 347 , 543 , 7243 , 339 , 29867 , 24549 , 883080 , 44748 , 4601400 , 4390310 , 76784645 , 17152154 , 673706358 , 650151218 , 8286783902 , 9807722173
n×2
37969970
n×3
56954955
n×4
75939940
n×5
94924925
n÷2
9492492.5
n÷3
6328328.3333333
n÷3
4746246.25
n÷5
3796997
n2
360429655450225
n3
6.8427516022777E+21
n4
1.2990953652797E+29
n5
2.4663306023404E+36
2 √n
4357.1762645089
3 √n
266.76985503073
4 √n
66.008910493273
5 √n
28.554992581219
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18984984
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18984985 can be divided by 4 positive divisors.
The sum of these divisors (counting 18984985) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001000011011000000011001
3
Ternary
1022201112111121
4
Quaternary
1020123000121
5
Quinary
14330004420
6
Senary
1514525241
8
Octal
110330031
10
Decimal
18984985
12
Duodecimal
6436821
16
Hexadecimal
121b019
20
Vigesimal
5id295
36
Base36
bawwp
md5
1ca2ba91e799082dd302b44e72726813
sha1
e6b1a8a4cbc33b98857c4c87b5aeeaa1ee191dd8
sha256
628aca859882b02cf27f96c0ac68f5abe98b3a0e639e1a323c382154979da7a3
sha512
55f1a75ae8bd2752226120c6a7fd2cd2c3a121af7e750fb9fd6fbc31ea65b65c50ccf18421702b5cf4ea6717ee8fb10f89059767a7854f96d30c49c620a394d5
ripemd-160
7f8f9ad5784940d2adac0051f95a6641d3d84246
Diameter
37969970
Circumference
119286178.80902
Area
1.1323231576983E+15
Volume
2.8662850885407E+22
Surface area
4.5292926307933E+15
Circumference
119286178.80902
Perimeter
75939940
Area
360429655450225
Diagonal
26848823.26845
Surface area
2162577932701350
Volume
6.8427516022777E+21
Space diagonal
32882958.600933
Perimeter
56954955
Area
1.5607061894858E+14
Altitude
16441479.300467
Surface area
1.5607061894858E+14
Volume
8.0642600999094E+20
Height
8949607.7561499