21424

21,424 is an even composite number composed of three prime numbers multiplied together.

What does the number 21424 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

21424 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 21424:

2⁴ × 13 × 103

(2 × 2 × 2 × 2 × 13 × 103)

See below for interesting mathematical facts about the number 21424 from the Numbermatics database.

Names of 21424

Cardinal: 21424 can be written as Twenty-one thousand, four hundred twenty-four.

Scientific notation

Scientific notation: 2.1424 × 10⁴

Factors of 21424

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 118

Divisors of 21424

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 8 13 16 26 52 103 104 206 208 412 824 1339 1648 2678 5356 10712 21424
Sum of all divisors σ(n): 45136
Sum of proper divisors (its aliquot sum) s(n): 23712
21424 is an abundant number, because the sum of its proper divisors (23712) is greater than itself. Its abundance is 2288

Bases of 21424

Binary: 101001110110000₂
Hexadecimal: 0x53B0
Base-36: GJ4

Squares and roots of 21424

21424 squared (21424²) is 458987776
21424 cubed (21424³) is 9833354113024
The square root of 21424 is 146.3693957083
The cube root of 21424 is 27.7736859157

Scales and comparisons

How big is 21424?

21,424 seconds is equal to 5 hours, 57 minutes, 4 seconds.
To count from 1 to 21,424 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 21424 cubic inches would be around 2.3 feet tall.

Recreational maths with 21424

21424 backwards is 42412
21424 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 21424's digits is 13
More coming soon!

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The information we have on file for 21424 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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