285 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.
Prime factorization of 285:
3 × 5 × 19
See below for interesting mathematical facts about the number 285 from the Numbermatics database.
Names of 285
- Cardinal: 285 can be written as Two hundred eighty-five.
- Scientific notation: 2.85 × 102
Factors of 285
Divisors of 285
Bases of 285
- Binary: 1000111012
- Hexadecimal: 0x11D
- Base-36: 7X
Squares and roots of 285
Scales and comparisonsHow big is 285?
- 285 seconds is equal to 4 minutes, 45 seconds.
To count from 1 to 285 would take you about two 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 285 cubic inches would be around 0.5 feet tall.
Recreational maths with 285
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Cite this page
"Number 285 - Facts about the integer". Numbermatics.com. 2020. Web. 25 September 2020.
Numbermatics. (2020). Number 285 - Facts about the integer. Retrieved 25 September 2020, from https://numbermatics.com/n/285/
Numbermatics. 2020. "Number 285 - Facts about the integer". https://numbermatics.com/n/285/
The information we have on file for 285 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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