2296

Number
$2296$ (two thousand, two hundred and ninety-six) is:


 * $2^3 \times 7 \times 41$


 * The $28$th octagonal number, after $1$, $8$, $21$, $40$, $65$, $\ldots$, $645$, $736$, $833$, $936$, $1045$, $1160$, $1281$, $1408$, $1541$, $1680$, $1825$, $1976$, $2133$:
 * $2296 = \displaystyle \sum_{k \mathop = 1}^{28} \left({6 k - 5}\right) = 28 \left({3 \times 28 - 2}\right)$