28,561

Number

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

$13^4$

The $4$th power of $13$ after $(1)$, $13$, $169$, $2197$:

$28 \, 561 = 13^4$

Can be expressed as the sum of $6$ fourth powers:

$28 \, 561 = 13^4 = 12^4 + 8^4 + 7^4 + 6^4 + 2^4 + 2^4$

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

$28 \, 561 = 13 \times 13 \times 13 \times 13$

The $169$th square number:

$28 \, 561 = 169 \times 169$