234

Number
$234$ (two hundred and twenty-eight) is:
 * $2 \times 3^2 \times 13$


 * The $4$th element of the $2$nd set of $4$ positive integers which form an arithmetic progression which all have the same Euler $\phi$ value:
 * $\phi \left({216}\right) = \phi \left({222}\right) = \phi \left({228}\right) = \phi \left({234}\right) = 72$