# 2820

## 2,820 is an even composite number composed of four prime numbers multiplied together.

What does the number 2820 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

2820 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

## Prime factorization of 2820:

### 22 × 3 × 5 × 47

(2 × 2 × 3 × 5 × 47)

See below for interesting mathematical facts about the number 2820 from the Numbermatics database.

### Names of 2820

• Cardinal: 2820 can be written as Two thousand, eight hundred twenty.

### Scientific notation

• Scientific notation: 2.82 × 103

### Factors of 2820

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 57

### Divisors of 2820

• Number of divisors d(n): 24
• Complete list of divisors:
• Sum of all divisors σ(n): 8064
• Sum of proper divisors (its aliquot sum) s(n): 5244
• 2820 is an abundant number, because the sum of its proper divisors (5244) is greater than itself. Its abundance is 2424

### Bases of 2820

• Binary: 1011000001002
• Base-36: 26C

### Squares and roots of 2820

• 2820 squared (28202) is 7952400
• 2820 cubed (28203) is 22425768000
• The square root of 2820 is 53.1036721895
• The cube root of 2820 is 14.1280764437

### Scales and comparisons

How big is 2820?
• 2,820 seconds is equal to 47 minutes.
• To count from 1 to 2,820 would take you about forty-seven minutes.

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 2820 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2820

• 2820 backwards is 0282
• 2820 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 2820's digits is 12
• More coming soon!

MLA style:
"Number 2820 - Facts about the integer". Numbermatics.com. 2022. Web. 25 May 2022.

APA style:
Numbermatics. (2022). Number 2820 - Facts about the integer. Retrieved 25 May 2022, from https://numbermatics.com/n/2820/

Chicago style:
Numbermatics. 2022. "Number 2820 - Facts about the integer". https://numbermatics.com/n/2820/

The information we have on file for 2820 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 2820, math, Factors of 2820, curriculum, school, college, exams, university, Prime factorization of 2820, STEM, science, technology, engineering, physics, economics, calculator, two thousand, eight hundred twenty.

Oh no. Javascript is switched off in your browser.
Some bits of this website may not work unless you switch it on.