5984
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Number
$5984$ (five thousand, nine hundred and eighty-four) is:
- $2^5 \times 11 \times 17$
- The $32$nd tetrahedral number, after $1$, $4$, $10$, $20$, $35$, $\ldots$, $816$, $969$, $1140$, $1330$, $1540$, $1771$, $2024$, $2300$, $2600$, $2925$, $3276$, $3276$, $4060$, $4495$, $4960$, $5456$:
- $5984 = \ds \sum_{k \mathop = 1}^{32} \frac {k \paren {k + 1} } 2 = \dfrac {32 \paren {32 + 1} \paren {32 + 2} } 6$