483

Number
$483$ (four hundred and eighty-three) is:


 * $3 \times 7 \times 23$


 * The $20$th Smith number after $4$, $22$, $27$, $58$, $\ldots$, $346$, $355$, $378$, $382$, $391$, $438$, $454$:
 * $4 + 8 + 3 = 3 + 7 + 2 + 3 = 15$