Fatto matematico: 28141 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 28141 is a boring number.
Data storica: January 16th is the day in 1605 that the first edition of El ingenioso hidalgo Don Quijote de la Mancha (Book One of Don Quixote) by Miguel de Cervantes is published in Madrid, Spain.