880

Number
$880$ (eight hundred and eighty) is:


 * $2^4 \times 5 \times 11$


 * The $7$th and last of the $3$-digit integers $m$ which need the largest number of reverse-and-add process iterations ($23$) before reaching a palindromic number:
 * $880$, $968$, $1837$, $\ldots$, $8 \, 713 \, 200 \, 023 \, 178$


 * The number of different magic squares of order $4$, up to rotation and reflection

Also see

 * Number of Magic Squares of Order 4