The rollover occurred because no player matched all the winning numbers from Friday night's drawing.
The next Mega Millions drawing is Tuesday night.
Although there was no grand prize winner, four players won second prizes of $250,000 apiece. Another 24 players won third prizes of $10,000 apiece.
The winning numbers from Friday night's drawing were: eight, 14, 22, 39, and 50. The Mega Ball number was 44.