372

Number
$372$ (three hundred and seventy-two) is:


 * $2^2 \times 3 \times 31$


 * The $38$th noncototient after $10, 26, 34, 50, \ldots, 290, 292, 298, 310, 326, 340, 344, 346, 362, 366$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 372$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $30$th untouchable number after $2, 5, 52, 88, 96, 120, 124, \ldots, 262, 268, 276, 288, 290, 292, 304, 306, 322, 324, 326, 336, 342$.


 * The product with its reversal equals the product of another $3$-digit number with its reversal:
 * $372 \times 273 = 651 \times 156$