18009990

18,009,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 18009990 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

18009990 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 18009990:

2 × 3² × 5 × 97 × 2063

(2 × 3 × 3 × 5 × 97 × 2063)

See below for interesting mathematical facts about the number 18009990 from the Numbermatics database.

Names of 18009990

Cardinal: 18009990 can be written as Eighteen million, nine thousand, nine hundred ninety.

Scientific notation

Scientific notation: 1.800999 × 10⁷

Factors of 18009990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 2170

Divisors of 18009990

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 5 6 9 10 15 18 30 45 90 97 194 291 485 582 873 970 1455 1746 2063 2910 4126 4365 6189 8730 10315 12378 18567 20630 30945 37134 61890 92835 185670 200111 400222 600333 1000555 1200666 1800999 2001110 3001665 3601998 6003330 9004995 18009990
Sum of all divisors σ(n): 47331648
Sum of proper divisors (its aliquot sum) s(n): 29321658
18009990 is an abundant number, because the sum of its proper divisors (29321658) is greater than itself. Its abundance is 11311668

Bases of 18009990

Binary: 1000100101100111110000110₂
Hexadecimal: 0x112CF86
Base-36: AQ0LI

Squares and roots of 18009990

18009990 squared (18009990²) is 324359739800100
18009990 cubed (18009990³) is 5841715670202402999000
The square root of 18009990 is 4243.8178566005
The cube root of 18009990 is 262.1226141699

Scales and comparisons

How big is 18009990?

18,009,990 seconds is equal to 29 weeks, 5 days, 10 hours, 46 minutes, 30 seconds.
To count from 1 to 18,009,990 would take you about forty-four weeks!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 18009990 cubic inches would be around 21.8 feet tall.

Recreational maths with 18009990

18009990 backwards is 09990081
The number of decimal digits it has is: 8
The sum of 18009990's digits is 36
More coming soon!

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The information we have on file for 18009990 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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