18021993

18,021,993 is an odd composite number composed of three prime numbers multiplied together.

What does the number 18021993 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

18021993 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 18021993:

3 × 11 × 739²

(3 × 11 × 739 × 739)

See below for interesting mathematical facts about the number 18021993 from the Numbermatics database.

Names of 18021993

Cardinal: 18021993 can be written as Eighteen million, twenty-one thousand, nine hundred ninety-three.

Scientific notation

Scientific notation: 1.8021993 × 10⁷

Factors of 18021993

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 753

Divisors of 18021993

Number of divisors d(n): 12
Complete list of divisors:
1 3 11 33 739 2217 8129 24387 546121 1638363 6007331 18021993
Sum of all divisors σ(n): 26249328
Sum of proper divisors (its aliquot sum) s(n): 8227335
18021993 is a deficient number, because the sum of its proper divisors (8227335) is less than itself. Its deficiency is 9794658

Bases of 18021993

Binary: 1000100101111111001101001₂
Hexadecimal: 0x112FE69
Base-36: AQ9UX

Squares and roots of 18021993

18021993 squared (18021993²) is 324792231692049
18021993 cubed (18021993³) is 5853403326008485233657
The square root of 18021993 is 4245.2317957917
The cube root of 18021993 is 262.1808329519

Scales and comparisons

How big is 18021993?

18,021,993 seconds is equal to 29 weeks, 5 days, 14 hours, 6 minutes, 33 seconds.
To count from 1 to 18,021,993 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 18021993 cubic inches would be around 21.8 feet tall.

Recreational maths with 18021993

18021993 backwards is 39912081
18021993 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 18021993's digits is 33
More coming soon!

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The information we have on file for 18021993 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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