9316

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Number

$9316$ (nine thousand, three hundred and sixteen) is:

$2^2 \times 17 \times 137$

The $136$th triangular number after $1$, $3$, $6$, $10$, $15$, $\ldots$, $8515$, $8646$, $8778$, $8911$, $9045$, $9180$:

$9316 = \ds \sum_{k \mathop = 1}^{136} k = \dfrac {136 \times \paren {136 + 1} } 2$

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