588

Number
$588$ (five hundred and eighty-eight) is:
 * $2^2 \times 3 \times 7^2$


 * The $26$th Smith number after $4$, $22$, $27$, $58$, $\ldots$, $346$, $355$, $378$, $382$, $391$, $438$, $454$, $483$, $517$, $526$, $535$, $562$, $576$:
 * $5 + 8 + 8 = 2 + 2 + 3 + 7 + 7 = 21$