326

Number
$326$ (three hundred and twenty-six) is:


 * $2 \times 173$


 * The $32$nd noncototient after $10, 26, 34, 50, \ldots, 244, 260, 266, 268, 274, 290, 292, 298, 310$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 326$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $15$th inconsummate number after $62, 63, 65, 75, 84, 95, 161, 173, 195, 216, 261, 266, 272, 276$:
 * $\nexists n \in \Z_{>0}: n = 326 \times s_{10} \left({n}\right)$


 * The $27$th untouchable number after $2, 5, 52, 88, 96, 120, 124, \ldots, 262, 268, 276, 288, 290, 292, 304, 306, 322, 324$.


 * The $51$st happy number after $1, 7, 10, 13, 19, 23, \ldots, 226, 230, 236, 239, 262, 263, 280, 291, 293, 301, 302, 310, 313, 319, 320$:
 * $326 \to 3^2 + 2^2 + 6^2 = 9 + 4 + 36 = 49 \to 4^2 + 9^2 = 16 + 81 = 97 \to 9^2 + 7^2 = 81 + 49 = 130 \to 1^2 + 3^2 + 0^2 = 1 + 9 + 0 = 10 \to 1^2 + 0^2 = 1$


 * The $11$th positive integer after $200, 202, 204, 205, 206, 208, 320, 322, 324, 325$ that cannot be made into a prime number by changing just $1$ digit