4960

Number
$4960$ (four thousand, nine hundred and sixty) is:


 * $2^5 \times 5 \times 31$


 * The $30$th tetrahedral number, after $1$, $4$, $10$, $20$, $35$, $\ldots$, $816$, $969$, $1140$, $1330$, $1540$, $1771$, $2024$, $2300$, $2600$, $2925$, $3276$, $3276$, $4060$, $4495$:
 * $4960 = \displaystyle \sum_{k \mathop = 1}^{30} \frac {k \left({k + 1}\right)} 2 = \dfrac {30 \left({30 + 1}\right) \left({30 + 2}\right)} 6$