Hecho general: 20807 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 20807 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 20807 is an uninteresting number.
Fecha histórica: December 18th is the day in 1888 that Richard Wetherill and his brother in-law discover the ancient Indian ruins of Cliff Palace in Mesa Verde.