21944

21,944 is an even composite number composed of three prime numbers multiplied together.

What does the number 21944 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

21944 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21944:

2³ × 13 × 211

(2 × 2 × 2 × 13 × 211)

See below for interesting mathematical facts about the number 21944 from the Numbermatics database.

Names of 21944

Cardinal: 21944 can be written as Twenty-one thousand, nine hundred forty-four.

Scientific notation

Scientific notation: 2.1944 × 10⁴

Factors of 21944

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 226

Divisors of 21944

Number of divisors d(n): 16
Complete list of divisors:
1 2 4 8 13 26 52 104 211 422 844 1688 2743 5486 10972 21944
Sum of all divisors σ(n): 44520
Sum of proper divisors (its aliquot sum) s(n): 22576
21944 is an abundant number, because the sum of its proper divisors (22576) is greater than itself. Its abundance is 632

Bases of 21944

Binary: 101010110111000₂
Hexadecimal: 0x55B8
Base-36: GXK

Squares and roots of 21944

21944 squared (21944²) is 481539136
21944 cubed (21944³) is 10566894800384
The square root of 21944 is 148.1350734971
The cube root of 21944 is 27.9965982261

Scales and comparisons

How big is 21944?

21,944 seconds is equal to 6 hours, 5 minutes, 44 seconds.
To count from 1 to 21,944 would take you about six 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 21944 cubic inches would be around 2.3 feet tall.

Recreational maths with 21944

21944 backwards is 44912
The number of decimal digits it has is: 5
The sum of 21944's digits is 20
More coming soon!

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The information we have on file for 21944 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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