# 870

## 870 is an even composite number composed of four prime numbers multiplied together.

What does the number 870 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

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

## Prime factorization of 870:

### 2 × 3 × 5 × 29

See below for interesting mathematical facts about the number 870 from the Numbermatics database.

### Names of 870

• Cardinal: 870 can be written as Eight hundred seventy.

### Scientific notation

• Scientific notation: 8.7 × 102

### Factors of 870

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 39

### Divisors of 870

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 2160
• Sum of proper divisors (its aliquot sum) s(n): 1290
• 870 is an abundant number, because the sum of its proper divisors (1290) is greater than itself. Its abundance is 420

### Bases of 870

• Binary: 11011001102
• Base-36: O6

### Squares and roots of 870

• 870 squared (8702) is 756900
• 870 cubed (8703) is 658503000
• The square root of 870 is 29.4957624075
• The cube root of 870 is 9.5464027093

### Scales and comparisons

How big is 870?
• 870 seconds is equal to 14 minutes, 30 seconds.
• To count from 1 to 870 would take you about 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 870 cubic inches would be around 0.8 feet tall.

### Recreational maths with 870

• 870 backwards is 078
• 870 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 870's digits is 15
• More coming soon!

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"Number 870 - Facts about the integer". Numbermatics.com. 2021. Web. 22 October 2021.

APA style:
Numbermatics. (2021). Number 870 - Facts about the integer. Retrieved 22 October 2021, from https://numbermatics.com/n/870/

Chicago style:
Numbermatics. 2021. "Number 870 - Facts about the integer". https://numbermatics.com/n/870/

The information we have on file for 870 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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