338

Number
$338$ (three hundred and thirty-eight) is:


 * $2 \times 13^2$


 * The $54$th happy number after $1$, $7$, $10$, $13$, $19$, $23$, $\ldots$, $226$, $230$, $236$, $239$, $262$, $263$, $280$, $291$, $293$, $301$, $302$, $310$, $313$, $319$, $320$, $326$, $329$, $331$:
 * $338 \to 3^2 + 3^2 + 8^2 = 9 + 9 + 64 = 82 \to 8^2 + 2^2 = 64 + 4 = 68 \to 6^2 + 8^2 = 36 + 64 = 100 \to 1^2 + 0^2 + 0^2 = 1$

Also see

 * No further elements of this sequence will be tabulated on .
 * No further elements of this sequence will be tabulated on .