20872

20,872 is an even composite number composed of two prime numbers multiplied together.

What does the number 20872 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

20872 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 20872:

2³ × 2609

(2 × 2 × 2 × 2609)

See below for interesting mathematical facts about the number 20872 from the Numbermatics database.

Names of 20872

Cardinal: 20872 can be written as Twenty thousand, eight hundred seventy-two.

Scientific notation

Scientific notation: 2.0872 × 10⁴

Factors of 20872

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 4
Sum of prime factors: 2611

Divisors of 20872

Number of divisors d(n): 8
Complete list of divisors:
1 2 4 8 2609 5218 10436 20872
Sum of all divisors σ(n): 39150
Sum of proper divisors (its aliquot sum) s(n): 18278
20872 is a deficient number, because the sum of its proper divisors (18278) is less than itself. Its deficiency is 2594

Bases of 20872

Binary: 101000110001000₂
Hexadecimal: 0x5188
Base-36: G3S

Squares and roots of 20872

20872 squared (20872²) is 435640384
20872 cubed (20872³) is 9092686094848
The square root of 20872 is 144.4714504669
The cube root of 20872 is 27.5330731559

Scales and comparisons

How big is 20872?

20,872 seconds is equal to 5 hours, 47 minutes, 52 seconds.
To count from 1 to 20,872 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 20872 cubic inches would be around 2.3 feet tall.

Recreational maths with 20872

20872 backwards is 27802
The number of decimal digits it has is: 5
The sum of 20872's digits is 19
More coming soon!

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The information we have on file for 20872 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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