Fatto generale: 20047 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 20047 is an unremarkable number.
Trivia: 20047 is an uninteresting number.
Data storica: November 19th is the day in 1911 that the Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.