3744
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Number
$3744$ (three thousand, seven hundred and forty-four) is:
- $2^5 \times 3 \times 39$
- The $39$th heptagonal number after $1$, $7$, $18$, $34$, $55$, $81$, $112$, $\ldots$, $2205$, $2356$, $2512$, $2673$, $2839$, $3010$, $3186$, $3367$, $3553$:
- $3744 = \ds \sum_{k \mathop = 1}^{39} \paren {5 k - 4} = \dfrac {39 \paren {5 \times 39 - 3} } 2$