7714

Number
$7714$ (seven thousand, seven hundred and fourteen) is:


 * $2 \times 7 \times 19 \times 29$


 * The $28$th square pyramidal number after $1$, $5$, $14$, $30$, $55$, $\ldots$, $3311$, $3795$, $4324$, $4900$, $5525$, $6201$, $6930$:
 * $7714 = \displaystyle \sum_{k \mathop = 1}^{28} k^2 = \dfrac {28 \left({28 + 1}\right) \left({2 \times 28 + 1}\right)} 6$