Please list the names of the crytocurrencies that have a total amount of existence of over 10000000 on 2013/4/28.
a total amount of existence of over 10000000 refers to total_supply>10000000; on 2013/4/28 refers to date = '2013-04-28'
SELECT T1.name FROM coins AS T1 INNER JOIN historical AS T2 ON T1.id = T2.coin_id WHERE T2.date = '2013-04-28' AND T2.total_supply > 10000000