7998

Number
$7998$ (seven thousand, nine hundred and ninety-eight) is:


 * $2 \times 3 \times 31 \times 43$


 * The $2$nd after $6999$ of the $4$-digit integers $m$ which need the largest number of reverse-and-add process iterations ($20$) before reaching a palindromic number:
 * $7998$, $16995$, $76956$, $\ldots$, $16668488486661$