10,000

Number
$10 \, 000$ (ten thousand) is:


 * $2^4 \times 5^4$


 * The $10$th fourth power after $1, 16, 81, 256, 625, 1296, 2401, 4096, 6561$:
 * $10 \, 000 = 10 \times 10 \times 10 \times 10$