21318

21,318 is an even composite number composed of five prime numbers multiplied together.

What does the number 21318 look like?

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

21318 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 21318:

2 × 3 × 11 × 17 × 19

See below for interesting mathematical facts about the number 21318 from the Numbermatics database.

Names of 21318

Cardinal: 21318 can be written as Twenty-one thousand, three hundred eighteen.

Scientific notation

Scientific notation: 2.1318 × 10⁴

Factors of 21318

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 52

Divisors of 21318

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 6 11 17 19 22 33 34 38 51 57 66 102 114 187 209 323 374 418 561 627 646 969 1122 1254 1938 3553 7106 10659 21318
Sum of all divisors σ(n): 51840
Sum of proper divisors (its aliquot sum) s(n): 30522
21318 is an abundant number, because the sum of its proper divisors (30522) is greater than itself. Its abundance is 9204

Bases of 21318

Binary: 101001101000110₂
Hexadecimal: 0x5346
Base-36: GG6

Squares and roots of 21318

21318 squared (21318²) is 454457124
21318 cubed (21318³) is 9688116969432
The square root of 21318 is 146.0068491545
The cube root of 21318 is 27.7278046693

Scales and comparisons

How big is 21318?

21,318 seconds is equal to 5 hours, 55 minutes, 18 seconds.
To count from 1 to 21,318 would take you about five hours.

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 21318 cubic inches would be around 2.3 feet tall.

Recreational maths with 21318

21318 backwards is 81312
The number of decimal digits it has is: 5
The sum of 21318's digits is 15
More coming soon!

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The information we have on file for 21318 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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