18993904 is an even 8-digits composite number following 18993903
and preceding 18993905 . In scientific notation, it is written as 1.8993904 × 10^7.
The sum of its digits is 43. It has a total of 6 prime factors and 20 positive divisors.
There are 9408960 positive integers (up to 18993904) that are relatively prime to 18993904.
18993904 has 20 divisors, whose sum is 37141720
The reverse of 18993904 is 40939981
Previous prime number is 109
Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7
Name
eighteen million nine hundred ninety-three thousand nine hundred four
Scientific notation
1.8993904 × 10^7
Engineering notation
1.8993904 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 109 × 10891
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2374238
Product of the distinct prime numbers
The prime factorization of 18993904 is 2 × 2 × 2 × 2 × 109 × 10891.
Since it has a total of 6 prime factors.
9 , 1 , 63 , 58 , 442 , 176 , 8330 , 2937 , 19922 , 87260 , 531580 , 978690 , 7010091 , 9045761 , 81743485 , 47375477 , 853533877 , 234931151 , 1115945281 , 4093948506
n×2
37987808
n×3
56981712
n×4
75975616
n×5
94969520
n÷2
9496952
n÷3
6331301.3333333
n÷3
4748476
n÷5
3798780.8
n2
360768389161216
n3
6.8524001499628E+21
n4
1.3015383061798E+29
n5
2.4721293639901E+36
2 √n
4358.1996282869
3 √n
266.81162396618
4 √n
66.016661747523
5 √n
28.557675060381
1 , 2 , 4 , 8 , 16 , 109 , 218 , 436 , 872 , 1744 , 10891 , 21782 , 43564 , 87128 , 174256 , 1187119 , 2374238 , 4748476 , 9496952 , 18993904
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
-18993903
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 18993904 can be divided by 20 positive divisors.
The sum of these divisors (counting 18993904) is 1, the average is 0.05.
Base
System
Value
2
Binary
1001000011101001011110000
3
Ternary
1022201222201221
4
Quaternary
1020131023300
5
Quinary
14330301104
6
Senary
1515034424
8
Octal
110351360
10
Decimal
18993904
12
Duodecimal
643ba14
16
Hexadecimal
121d2f0
20
Vigesimal
5ie4f4
36
Base36
bb3sg
md5
31f86feb1448b0379a6a33aa425175cd
sha1
3ed41e246bc12688d12437fb551a98f8fbeb6d2d
sha256
d6042a0d9a7ffb30b2023cb3ee246a53a7e425a8ac0083917db41ecdc2f22880
sha512
061bcb6fb8eaeb2f564b4bafea10eb75ca9ba61936a2c067875f684392b8940f2db43961dbeeb354c77dfd0f411649dc46f6b097a6b51178ebb764e3f112537d
ripemd-160
27e00119d262545bd899090019aafb897cb42c2d
Diameter
37987808
Circumference
119342218.53878
Area
1.1333873210363E+15
Volume
2.8703266627441E+22
Surface area
4.5335492841452E+15
Circumference
119342218.53878
Perimeter
75975616
Area
360768389161216
Diagonal
26861436.639213
Surface area
2164610334967296
Volume
6.8524001499628E+21
Space diagonal
32898406.762086
Perimeter
56981712
Area
1.56217294948E+14
Altitude
16449203.381043
Surface area
1.56217294948E+14
Volume
8.075631022404E+20
Height
8953812.2130709