# 2840

## 2,840 is an even composite number composed of three prime numbers multiplied together.

What does the number 2840 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

2840 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

## Prime factorization of 2840:

### 23 × 5 × 71

(2 × 2 × 2 × 5 × 71)

See below for interesting mathematical facts about the number 2840 from the Numbermatics database.

### Names of 2840

• Cardinal: 2840 can be written as Two thousand, eight hundred forty.

### Scientific notation

• Scientific notation: 2.84 × 103

### Factors of 2840

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 78

### Divisors of 2840

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 6480
• Sum of proper divisors (its aliquot sum) s(n): 3640
• 2840 is an abundant number, because the sum of its proper divisors (3640) is greater than itself. Its abundance is 800

### Bases of 2840

• Binary: 1011000110002
• Base-36: 26W

### Squares and roots of 2840

• 2840 squared (28402) is 8065600
• 2840 cubed (28403) is 22906304000
• The square root of 2840 is 53.2916503779
• The cube root of 2840 is 14.1613975023

### Scales and comparisons

How big is 2840?
• 2,840 seconds is equal to 47 minutes, 20 seconds.
• To count from 1 to 2,840 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 2840 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2840

• 2840 backwards is 0482
• The number of decimal digits it has is: 4
• The sum of 2840's digits is 14
• More coming soon!

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"Number 2840 - Facts about the integer". Numbermatics.com. 2023. Web. 6 June 2023.

APA style:
Numbermatics. (2023). Number 2840 - Facts about the integer. Retrieved 6 June 2023, from https://numbermatics.com/n/2840/

Chicago style:
Numbermatics. 2023. "Number 2840 - Facts about the integer". https://numbermatics.com/n/2840/

The information we have on file for 2840 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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