28,561

Number
$28 \, 561$ (twenty-eight thousand, five hundred and sixty-one) is:


 * $13^4$


 * The $169$th square number:
 * $28 \, 561 = 169 \times 169$


 * The $13$th fourth power after $1$, $16$, $81$, $256$, $625$, $1296$, $2401$, $4096$, $6561$, $10 \, 000$, $14 \, 641$, $20 \, 736$:
 * $28 \, 561 = 13 \times 13 \times 13 \times 13$


 * Can be expressed as the sum of $6$ fourth powers:
 * $28 \, 561 = 13^4 = 12^4 + 8^4 + 7^4 + 6^4 + 2^4 + 2^4$

Also see

 * Fourth Power expressible as Sum of 6 Fourth Powers