Exponential power

From this week's New Yorker (June 27, 2016) from a poem by Maya Ribault entitled "Society of Butterflies" this mathy statement:

                                . . .                 I save  
            for retirement—to my bohemian eyes, 
            a fortune—though they say you need more
            than a million. Immerse yourself in the exponential
            power of dividends.      . . . 

Read the entire poem here.