20856

20,856 is an even composite number composed of four prime numbers multiplied together.

What does the number 20856 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

20856 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 20856:

2³ × 3 × 11 × 79

(2 × 2 × 2 × 3 × 11 × 79)

See below for interesting mathematical facts about the number 20856 from the Numbermatics database.

Names of 20856

Cardinal: 20856 can be written as Twenty thousand, eight hundred fifty-six.

Scientific notation

Scientific notation: 2.0856 × 10⁴

Factors of 20856

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 95

Divisors of 20856

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 4 6 8 11 12 22 24 33 44 66 79 88 132 158 237 264 316 474 632 869 948 1738 1896 2607 3476 5214 6952 10428 20856
Sum of all divisors σ(n): 57600
Sum of proper divisors (its aliquot sum) s(n): 36744
20856 is an abundant number, because the sum of its proper divisors (36744) is greater than itself. Its abundance is 15888

Bases of 20856

Binary: 101000101111000₂
Hexadecimal: 0x5178
Base-36: G3C

Squares and roots of 20856

20856 squared (20856²) is 434972736
20856 cubed (20856³) is 9071791382016
The square root of 20856 is 144.4160655883
The cube root of 20856 is 27.5260359485

Scales and comparisons

How big is 20856?

20,856 seconds is equal to 5 hours, 47 minutes, 36 seconds.
To count from 1 to 20,856 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 20856 cubic inches would be around 2.3 feet tall.

Recreational maths with 20856

20856 backwards is 65802
The number of decimal digits it has is: 5
The sum of 20856's digits is 21
More coming soon!

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The information we have on file for 20856 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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