A million in numbers is 1,000,000. A million is also written as M or 106. Some writing style guides include rules that call for a million to be written as 1 million.
One million in dollars is written as either $1 million or $1,000,000. Multiples of millions are written most commonly as 10,000,000 in numbers or 10 million. One million is the equivalent of 1,000 multiplied by 1,000. It is called a cardinal number as opposed to an ordinal number. A cardinal number designates a amount or quantity while an ordinal number designates a position or placement, like first or second.