18,416

Number
$18 \, 416$ (eighteen thousand, four hundred and sixteen) is:
 * $2^4 \times 1151$


 * The larger of the $8$th amicable pair, with $18 \, 416$:
 * $\sigma \left({17 \, 296}\right) = \sigma \left({18 \, 416}\right) = 35 \, 712 = 17 \, 296 + 18 \, 416$
 * which is also the $2$nd Thabit pair:
 * $17 \, 296 = 2^4 \times 23 \times 47 = 2^4 \left({3 \times 2^4 - 1}\right) \left({3 \times 2^{3 - 1} - 1}\right), 18 \, 416 = 2^4 \left({9 \times 2^{2 \times 4 - 1} - 1}\right)$

Also see

 * Sigma of 18416