Hecho general: 4628 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 4628 is an uninteresting number.
Trivia: 4628 is a boring number.
Fecha histórica: September 1st is the day in 1604 that Adi Granth, now known as Guru Granth Sahib, the holy scripture of Sikhs, was first installed at Harmandir Sahib.