| Number | 306 |
|---|---|
| Divisor | 1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306 |
306 is the natural number following 305 and preceding 307.
In mathematics
- 306 is an even composite number with three prime factors.[1]
- 306 is the sum of consecutive primes 71+73+79+83.
- 306 is the 17th oblong number meaning that it is equal to 17*18.[2][3]
- 306 is an untouchable number meaning that it cannot be equal to the sum of proper factors in any number.[4][5]
- There are 306 triangular numbers with 5 digits.[6]
⁵ √306 is an approximation of pi
References
- ^ "Facts about the integer". mathworld.wolfram.com
- ^
- ^ Cooke, Robert (2013). The History of Mathematics. A John Wiley & Sons, Inc., Publication. p. 110. ISBN 9781118217566.
- ^
- ^ Pomerance, Carl & Yang, Hee-Sung. "On Untouchable Numbers and Related Probems". math.dartmouth.edu
- ^ Bicknell, Marjorie & Hoggatt, V. E. "Triangular numbers". mathstat.dal.ca