What exactly is Exponential Factor in the coin properties? What does the default value of 32 represent?
In order to calculate how many coins per day you are rewarded based on the coin difficulty there is a factor that needs be to taken into consideration. It's often 32 or 0, but can be different depending on the coin. It's the coin developers that come up with something how much reward they give based on the current difficulty - but I have to admit that I don't know how this works in detail.
The Coins Per Day is calculated by: HashRate * SecondsPerDay * Block Reward / Difficulty / 2^ExpFactor
where ExpFactor is for example 32.
A change to ExpFactor will change the number of calculated Coins Per Day.