20

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

What does the number 20 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

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

Prime factorization of 20:

2² × 5

(2 × 2 × 5)

See below for interesting mathematical facts about the number 20 from the Numbermatics database.

Names of 20

Cardinal: 20 can be written as Twenty.

Scientific notation

Scientific notation: 2 × 10¹

Factors of 20

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 3
Sum of prime factors: 7

Divisors of 20

Number of divisors d(n): 6
Complete list of divisors:
1 2 4 5 10 20
Sum of all divisors σ(n): 42
Sum of proper divisors (its aliquot sum) s(n): 22
20 is an abundant number, because the sum of its proper divisors (22) is greater than itself. Its abundance is 2

Bases of 20

Binary: 10100₂
Hexadecimal: 0x14
Base-36: K

Squares and roots of 20

20 squared (20²) is 400
20 cubed (20³) is 8000
The square root of 20 is 4.4721359549
The cube root of 20 is 2.7144176165

Scales and comparisons

How big is 20?

A cube with a volume of 20 cubic inches would be around 0.2 feet tall.

Recreational maths with 20

20 backwards is 02
20 is a Harshad number.
The number of decimal digits it has is: 2
The sum of 20's digits is 2
More coming soon!

Copy this link to share with anyone:

Share this page on social media:

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

<a href="https://numbermatics.com/n/20/?utm_source=shared">Number 20 - Facts about the integer</a>

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

[url=https://numbermatics.com/n/20/?utm_source=shared]Number 20 - Facts about the integer[/url]

Cite this page

MLA style:
"Number 20 - Facts about the integer". Numbermatics.com. 2024. Web. 26 April 2024.

APA style:
Numbermatics. (2024). Number 20 - Facts about the integer. Retrieved 26 April 2024, from https://numbermatics.com/n/20/

Chicago style:
Numbermatics. 2024. "Number 20 - Facts about the integer". https://numbermatics.com/n/20/

The information we have on file for 20 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!

Keywords: Divisors of 20, math, Factors of 20, curriculum, school, college, exams, university, Prime factorization of 20, STEM, science, technology, engineering, physics, economics, calculator, twenty.