4774

Previous  ... Next

Number

$4774$ (four thousand, seven hundred and seventy-four) is:

$2 \times 7 \times 11 \times 31$

The $44$th heptagonal number after $1$, $7$, $18$, $34$, $55$, $81$, $112$, $\ldots$, $3010$, $3186$, $3367$, $3744$, $3940$, $4141$, $4347$, $4558$:

$4774 = \ds \sum_{k \mathop = 1}^{44} \paren {5 k - 4} = \dfrac {44 \paren {5 \times 44 - 3} } 2$

Also see

• Previous  ... Next: Heptagonal Number