18007993

18,007,993 is an odd composite number composed of four prime numbers multiplied together.

What does the number 18007993 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

18007993 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 18007993:

31 × 61 × 89 × 107

See below for interesting mathematical facts about the number 18007993 from the Numbermatics database.

Names of 18007993

Cardinal: 18007993 can be written as Eighteen million, seven thousand, nine hundred ninety-three.

Scientific notation

Scientific notation: 1.8007993 × 10⁷

Factors of 18007993

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 288

Divisors of 18007993

Number of divisors d(n): 16
Complete list of divisors:
1 31 61 89 107 1891 2759 3317 5429 6527 9523 168299 202337 295213 580903 18007993
Sum of all divisors σ(n): 19284480
Sum of proper divisors (its aliquot sum) s(n): 1276487
18007993 is a deficient number, because the sum of its proper divisors (1276487) is less than itself. Its deficiency is 16731506

Bases of 18007993

Binary: 1000100101100011110111001₂
Hexadecimal: 0x112C7B9
Base-36: APZ21

Squares and roots of 18007993

18007993 squared (18007993²) is 324287811888049
18007993 cubed (18007993³) is 5839772646465303175657
The square root of 18007993 is 4243.5825666529
The cube root of 18007993 is 262.1129255063

Scales and comparisons

How big is 18007993?

18,007,993 seconds is equal to 29 weeks, 5 days, 10 hours, 13 minutes, 13 seconds.
To count from 1 to 18,007,993 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 18007993 cubic inches would be around 21.8 feet tall.

Recreational maths with 18007993

18007993 backwards is 39970081
The number of decimal digits it has is: 8
The sum of 18007993's digits is 37
More coming soon!

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The information we have on file for 18007993 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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