21289918

21,289,918 is an even composite number composed of five prime numbers multiplied together.

What does the number 21289918 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

21289918 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21289918:

2 × 13 × 19 × 71 × 607

See below for interesting mathematical facts about the number 21289918 from the Numbermatics database.

Names of 21289918

Cardinal: 21289918 can be written as Twenty-one million, two hundred eighty-nine thousand, nine hundred eighteen.

Scientific notation

Scientific notation: 2.1289918 × 10⁷

Factors of 21289918

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 712

Divisors of 21289918

Number of divisors d(n): 32
Complete list of divisors:
1 2 13 19 26 38 71 142 247 494 607 923 1214 1349 1846 2698 7891 11533 15782 17537 23066 35074 43097 86194 149929 299858 560261 818843 1120522 1637686 10644959 21289918
Sum of all divisors σ(n): 36771840
Sum of proper divisors (its aliquot sum) s(n): 15481922
21289918 is a deficient number, because the sum of its proper divisors (15481922) is less than itself. Its deficiency is 5807996

Bases of 21289918

Binary: 1010001001101101110111110₂
Hexadecimal: 0x144DBBE
Base-36: COBEM

Squares and roots of 21289918

21289918 squared (21289918²) is 453260608446724
21289918 cubed (21289918³) is 9649881186460861328632
The square root of 21289918 is 4614.0999122255
The cube root of 21289918 is 277.1562412747

Scales and comparisons

How big is 21289918?

21,289,918 seconds is equal to 35 weeks, 1 day, 9 hours, 51 minutes, 58 seconds.
To count from 1 to 21,289,918 would take you about five days!

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 21289918 cubic inches would be around 23.1 feet tall.

Recreational maths with 21289918

21289918 backwards is 81998212
The number of decimal digits it has is: 8
The sum of 21289918's digits is 40
More coming soon!

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The information we have on file for 21289918 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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