Hecho general: 20780 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 20780 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 20780 is a boring number.
Fecha histórica: November 21st is the day in 1979 that the United States Embassy in Islamabad, Pakistan is attacked by a mob and set on fire, killing four.