Hecho general: 1582 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 1582 is a value of n so that n(n+4) is a palindrome.
Trivia: 1582 is an unremarkable number.
Fecha histórica: April 30th is the day in 1927 that Douglas Fairbanks and Mary Pickford become the first celebrities to leave their footprints in concrete at Grauman's Chinese Theater in Hollywood.