2346

Number
$2346$ (two thousand, three hundred and forty-six) is:
 * $2 \times 3 \times 17 \times 23$


 * The $68$th triangular number after $1$, $3$, $6$, $10$, $15$, $\ldots$, $1891$, $1953$, $2016$, $2080$, $2145$, $2211$, $2278$:
 * $2346 = \ds \sum_{k \mathop = 1}^{68} k = \dfrac {68 \times \paren {68 + 1} } 2$