Hecho general: 17978 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 17978 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 17978 is an unremarkable number.
Fecha histórica: March 21st is the day in 1946 that the Los Angeles Rams sign Kenny Washington, making him the first African American player in the American football since 1933.