# 7920

## 7,920 is an even composite number composed of four prime numbers multiplied together.

What does the number 7920 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 60 divisors.

7920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.

## Prime factorization of 7920:

### 24 × 32 × 5 × 11

(2 × 2 × 2 × 2 × 3 × 3 × 5 × 11)

See below for interesting mathematical facts about the number 7920 from the Numbermatics database.

### Names of 7920

• Cardinal: 7920 can be written as Seven thousand, nine hundred twenty.

### Scientific notation

• Scientific notation: 7.92 × 103

### Factors of 7920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 21

### Divisors of 7920

• Number of divisors d(n): 60
• Complete list of divisors:
• Sum of all divisors σ(n): 29016
• Sum of proper divisors (its aliquot sum) s(n): 21096
• 7920 is an abundant number, because the sum of its proper divisors (21096) is greater than itself. Its abundance is 13176

### Bases of 7920

• Binary: 11110111100002
• Base-36: 640

### Squares and roots of 7920

• 7920 squared (79202) is 62726400
• 7920 cubed (79203) is 496793088000
• The square root of 7920 is 88.9943818451
• The cube root of 7920 is 19.9331098683

### Scales and comparisons

How big is 7920?
• 7,920 seconds is equal to 2 hours, 12 minutes.
• To count from 1 to 7,920 would take you about two 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 7920 cubic inches would be around 1.7 feet tall.

### Recreational maths with 7920

• 7920 backwards is 0297
• 7920 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 7920's digits is 18
• More coming soon!

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"Number 7920 - Facts about the integer". Numbermatics.com. 2021. Web. 22 October 2021.

APA style:
Numbermatics. (2021). Number 7920 - Facts about the integer. Retrieved 22 October 2021, from https://numbermatics.com/n/7920/

Chicago style:
Numbermatics. 2021. "Number 7920 - Facts about the integer". https://numbermatics.com/n/7920/

The information we have on file for 7920 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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