20655

20,655 is an odd composite number composed of three prime numbers multiplied together.

What does the number 20655 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

20655 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 20655:

3⁵ × 5 × 17

(3 × 3 × 3 × 3 × 3 × 5 × 17)

See below for interesting mathematical facts about the number 20655 from the Numbermatics database.

Names of 20655

Cardinal: 20655 can be written as Twenty thousand, six hundred fifty-five.

Scientific notation

Scientific notation: 2.0655 × 10⁴

Factors of 20655

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 25

Divisors of 20655

Number of divisors d(n): 24
Complete list of divisors:
1 3 5 9 15 17 27 45 51 81 85 135 153 243 255 405 459 765 1215 1377 2295 4131 6885 20655
Sum of all divisors σ(n): 39312
Sum of proper divisors (its aliquot sum) s(n): 18657
20655 is a deficient number, because the sum of its proper divisors (18657) is less than itself. Its deficiency is 1998

Bases of 20655

Binary: 101000010101111₂
Hexadecimal: 0x50AF
Base-36: FXR

Squares and roots of 20655

20655 squared (20655²) is 426629025
20655 cubed (20655³) is 8812022511375
The square root of 20655 is 143.7184748041
The cube root of 20655 is 27.4373228213

Scales and comparisons

How big is 20655?

20,655 seconds is equal to 5 hours, 44 minutes, 15 seconds.
To count from 1 to 20,655 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 20655 cubic inches would be around 2.3 feet tall.

Recreational maths with 20655

20655 backwards is 55602
The number of decimal digits it has is: 5
The sum of 20655's digits is 18
More coming soon!

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The information we have on file for 20655 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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