280
280 is an even composite number composed of three prime numbers multiplied together.
280 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 280:
2^{3} × 5^{} × 7^{}
(2 × 2 × 2 × 5 × 7)See below for interesting mathematical facts about the number 280 from the Numbermatics database.
Names of 280
 Cardinal: 280 can be written as Two hundred eighty.
Scientific notation
 Scientific notation: 2.8 × 10^{2}
Factors of 280
Divisors of 280
Bases of 280
 Binary: 100011000_{2}
 Hexadecimal: 0x118
 Base36: 7S
Squares and roots of 280
Scales and comparisons
How big is 280? 280 seconds is equal to 4 minutes, 40 seconds.

To count from 1 to 280 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 randomlychosen 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 280 cubic inches would be around 0.5 feet tall.
Recreational maths with 280
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The information we have on file for 280 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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