538
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Number
$538$ (five hundred and thirty-eight) is:
- $2 \times 269$
- The $3$rd positive integer after $38$, $462$ whose square ends in $444$:
- $538^2 = \left({500 + 38}\right)^2 = \left({250 + 38}\right) \times 1000 + 1444 = 289 \, 144$