A megahertz is one million (or 106) hertz. See hertz, kilohertz (one thousand hertz), gigahertz[?] (109 hertz), terahertz[?] (1012 hertz), and petahertz[?] (1015 hertz).
... is 245.1/km² (635.7/mi²). There are 545 housing units at an average density of 167.0/km² (433.1/mi²). The racial makeup of the town is 74.50% ...