You need to accurately weigh it to determine if it's zinc or copper. Denver made over 6 BILLION CENTS in 1982 and only one copper small date has been found, so you have a much better chance of winning the lottery than finding a copper 1982 D small date.
To answer your questions, it is a small date Denver. Like Hoopster says, you have to weigh it to determine copper or zinc. 99.999999999999999% chance it's a zinc. I am horrible at prices, but seems like you could fetch $1 for it on ebay. I'd keep it and use it a nice reference for the next 1982 penny you come across.
It's worth .01 cent. Yes it is a small date Denver. The small date 1982 Philly has a little value in very high grade zinc or copper.
Weigh it . The unique copper one weighs 3.11 grams +/- .13 so 2.98 to 3.24 grams. The common zinc core one is 2.5 gr +/- .10 so 2.4 grams to 2.60 grams. Jim