820 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.
Prime factorization of 820:
22 × 5 × 41(2 × 2 × 5 × 41)
See below for interesting mathematical facts about the number 820 from the Numbermatics database.
Names of 820
- Cardinal: 820 can be written as Eight hundred twenty.
- Scientific notation: 8.2 × 102
Factors of 820
Divisors of 820
Bases of 820
- Binary: 11001101002
- Hexadecimal: 0x334
- Base-36: MS
Squares and roots of 820
Scales and comparisonsHow big is 820?
- 820 seconds is equal to 13 minutes, 40 seconds.
To count from 1 to 820 would take you about six 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 820 cubic inches would be around 0.8 feet tall.
Recreational maths with 820
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Cite this page
"Number 820 - Facts about the integer". Numbermatics.com. 2021. Web. 8 March 2021.
Numbermatics. (2021). Number 820 - Facts about the integer. Retrieved 8 March 2021, from https://numbermatics.com/n/820/
Numbermatics. 2021. "Number 820 - Facts about the integer". https://numbermatics.com/n/820/
The information we have on file for 820 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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