21987369

21,987,369 is an odd composite number composed of two prime numbers multiplied together.

What does the number 21987369 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 14 divisors.

21987369 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fourteen divisors.

Prime factorization of 21987369:

3⁶ × 30161

(3 × 3 × 3 × 3 × 3 × 3 × 30161)

See below for interesting mathematical facts about the number 21987369 from the Numbermatics database.

Names of 21987369

Cardinal: 21987369 can be written as Twenty-one million, nine hundred eighty-seven thousand, three hundred sixty-nine.

Scientific notation

Scientific notation: 2.1987369 × 10⁷

Factors of 21987369

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 7
Sum of prime factors: 30164

Divisors of 21987369

Number of divisors d(n): 14
Complete list of divisors:
1 3 9 27 81 243 729 30161 90483 271449 814347 2443041 7329123 21987369
Sum of all divisors σ(n): 32967066
Sum of proper divisors (its aliquot sum) s(n): 10979697
21987369 is a deficient number, because the sum of its proper divisors (10979697) is less than itself. Its deficiency is 11007672

Bases of 21987369

Binary: 1010011111000000000101001₂
Hexadecimal: 0x14F8029
Base-36: D39K9

Squares and roots of 21987369

21987369 squared (21987369²) is 483444395542161
21987369 cubed (21987369³) is 10629670315767448964409
The square root of 21987369 is 4689.0690973795
The cube root of 21987369 is 280.1502977103

Scales and comparisons

How big is 21987369?

21,987,369 seconds is equal to 36 weeks, 2 days, 11 hours, 36 minutes, 9 seconds.
To count from 1 to 21,987,369 would take you about two 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 21987369 cubic inches would be around 23.3 feet tall.

Recreational maths with 21987369

21987369 backwards is 96378912
The number of decimal digits it has is: 8
The sum of 21987369's digits is 45
More coming soon!

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The information we have on file for 21987369 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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