Fatto generale: 16 is the number of teams that qualified for the finals of the FIFA World Cup from 1934 through 1978 (although for various reasons, only 15 competed in the 1938 and 1950 finals).
Fatto matematico: 16 is a centered pentagonal number.
Trivia: 16 is the minimum age for getting an adult job in most states and provinces across the globe.
Data storica: January 16th is the day in 1900 that the United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.