21056

21,056 is an even composite number composed of three prime numbers multiplied together.

What does the number 21056 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 28 divisors.

21056 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-eight divisors.

Prime factorization of 21056:

2⁶ × 7 × 47

(2 × 2 × 2 × 2 × 2 × 2 × 7 × 47)

See below for interesting mathematical facts about the number 21056 from the Numbermatics database.

Names of 21056

Cardinal: 21056 can be written as Twenty-one thousand and fifty-six.

Scientific notation

Scientific notation: 2.1056 × 10⁴

Factors of 21056

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 56

Divisors of 21056

Number of divisors d(n): 28
Complete list of divisors:
1 2 4 7 8 14 16 28 32 47 56 64 94 112 188 224 329 376 448 658 752 1316 1504 2632 3008 5264 10528 21056
Sum of all divisors σ(n): 48768
Sum of proper divisors (its aliquot sum) s(n): 27712
21056 is an abundant number, because the sum of its proper divisors (27712) is greater than itself. Its abundance is 6656

Bases of 21056

Binary: 101001001000000₂
Hexadecimal: 0x5240
Base-36: G8W

Squares and roots of 21056

21056 squared (21056²) is 443355136
21056 cubed (21056³) is 9335285743616
The square root of 21056 is 145.1068571777
The cube root of 21056 is 27.6137437675

Scales and comparisons

How big is 21056?

21,056 seconds is equal to 5 hours, 50 minutes, 56 seconds.
To count from 1 to 21,056 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 21056 cubic inches would be around 2.3 feet tall.

Recreational maths with 21056

21056 backwards is 65012
21056 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 21056's digits is 14
More coming soon!

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The information we have on file for 21056 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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