Fatto generale: 27638 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 27638 is an uninteresting number.
Trivia: 27638 is an uninteresting number.
Data storica: September 1st is the day in 1958 that Iceland expands its fishing zone, putting it into conflict with the United Kingdom, beginning the Cod Wars.