A Victorian man has been left "dumbfounded" after winning $1.5 million in the weekly lotto draw.

The man from Hoppers Crossing won the division one prize in the TattsLotto draw 4603 on August 30.

There were four division one winners, with each one taking home $1,569,487.31.

The winning numbers were 10, 28, 5, 4, 9 and 36, and the supplementary numbers were 2 and 14.

The man found out he had won five days after the draw. 

"It's a dizzying experience!" the man told The Lott after finding out he won.

"I always go to the same agency and play two tickets a week.

"But I just can't be bothered checking them straight away, so I usually only find out if I have a win when I go in the following week and collect $20 or $30.

"I went in today and asked them to check my ticket...the guy behi

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