3795

Number
$3795$ (three thousand, seven hundred and ninety-five) is:


 * $3 \times 5 \times 11 \times 23$


 * The $22$nd square pyramidal number after $1$, $5$, $14$, $30$, $55$, $\ldots$, $1015$, $1240$, $1496$, $1785$, $2109$, $2470$, $2870$, $3311$:
 * $3795 = \displaystyle \sum_{k \mathop = 1}^{22} k^2 = \dfrac {22 \left({22 + 1}\right) \left({2 \times 22 + 1}\right)} 6$