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:
23 × 5 × 7
(2 × 2 × 2 × 5 × 7)
23 × 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: 2.8 × 102
Factors of 280
- Number of distinct prime factors ω(n): 3
- Total number of prime factors Ω(n): 5
- Sum of prime factors: 14
Divisors of 280
- Number of divisors d(n): 16
- Complete list of divisors:
- Sum of all divisors σ(n): 720
- Sum of proper divisors (its aliquot sum) s(n): 440
- 280 is an abundant number, because the sum of its proper divisors (440) is greater than itself. Its abundance is 160
Bases of 280
- Binary: 100011000 2
- Hexadecimal: 0x118
- Base-36: 7S
Squares and roots of 280
- 280 squared (2802) is 78400
- 280 cubed (2803) is 21952000
square rootof 280 is 16.7332005307
cube rootof 280 is 6.5421326203
Scales and comparisonsHow 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 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.
Note: 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
- 280 backwards is 082
- 280 is a
- The number of decimal digits it has is: 3
- The sum of 280's digits is 10
- More coming soon!
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!