41,616

Number
$41,616$ (forty-one thousand, six hundred and sixteen) is:
 * $2^4 \times 3^2 \times 17^2$


 * The $204$th square number:
 * $41 \, 616 = 204 \times 204$


 * The $288$th triangular number:
 * $41 \, 616 = \displaystyle \sum_{k \mathop = 1}^{288} k = \dfrac {288 \times \left({288 + 1}\right)} 2$


 * The $4$th number after $1$, $36$, $1225$ to be both square and triangular:
 * $41 \, 616 = 204^2 = \dfrac {288 \times \left({288 + 1}\right)} 2$