One Million, Forty-Eight Thousand, Five Hundred Seventy-Six. As I pointed out to my computer teacher several years ago (much to his annoyance), this is the number of bytes in one megabyte. For simplicity, we tend to say that a megabyte (or meg, or MB) is one million bytes, however, the binary number system of computers doesn't use the "nice, round numbers" that our familliar base-ten number system uses.

1,048,576 is equal to 2^20. The square root of 1,048,576 is 1,024, which is the number of bytes in a kilobyte.