21072

21,072 is an even composite number composed of three prime numbers multiplied together.

What does the number 21072 look like?

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

21072 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 21072:

2⁴ × 3 × 439

(2 × 2 × 2 × 2 × 3 × 439)

See below for interesting mathematical facts about the number 21072 from the Numbermatics database.

Names of 21072

Cardinal: 21072 can be written as Twenty-one thousand and seventy-two.

Scientific notation

Scientific notation: 2.1072 × 10⁴

Factors of 21072

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 444

Divisors of 21072

Number of divisors d(n): 20
Complete list of divisors:
1 2 3 4 6 8 12 16 24 48 439 878 1317 1756 2634 3512 5268 7024 10536 21072
Sum of all divisors σ(n): 54560
Sum of proper divisors (its aliquot sum) s(n): 33488
21072 is an abundant number, because the sum of its proper divisors (33488) is greater than itself. Its abundance is 12416

Bases of 21072

Binary: 101001001010000₂
Hexadecimal: 0x5250
Base-36: G9C

Squares and roots of 21072

21072 squared (21072²) is 444029184
21072 cubed (21072³) is 9356582965248
The square root of 21072 is 145.1619784929
The cube root of 21072 is 27.6207363593

Scales and comparisons

How big is 21072?

21,072 seconds is equal to 5 hours, 51 minutes, 12 seconds.
To count from 1 to 21,072 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 21072 cubic inches would be around 2.3 feet tall.

Recreational maths with 21072

21072 backwards is 27012
21072 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 21072's digits is 12
More coming soon!

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The information we have on file for 21072 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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