The 2016 Rio Olympics in 20 Fun Numbers

When Rio de Janeiro opens the Olympic Games on August 5, they will be the first ever staged in South America. And here are 20 more eye-catching statistics:

17,000 - number of Olympic athletes and officials.

78,000 - the capacity of Maracana stadium, where the opening and closing ceremonies will be held.

206 - countries competing in the August 5-21 Games.

1 - team of refugees competing under the Olympic banner for the first time.

7.5 million - tickets on sale.

10 - miles (16 kilometers), length of the extension of the underground metro system, the biggest infrastructure project in preparation for the Games.

4 - zones across Rio where events will unfold: the Olympic Park in Barra da Tijuca, Deodoro, Copacabana beach, and the Maracana and Olympic stadiums in the north.

25,000 - number of journalists covering the Games.

500,000 - estimate of tourists expected to attend the Games.

61 - percentage of Rio residents in a recent poll who said the Games will be great. Another 27 percent fear a mess.

31 - number of tower blocks making up the Olympic Village. The 3,604 apartments will be sold off after the Games.

60,000 - meals per day to be served at the huge Olympic Village dining hall.

5 - number of jumbo jets you could fit into that dining hall.

80,000 - chairs for the Olympic Village.

7 - players in rugby sevens, which brings the oval ball game to the Olympics for the first time ever.

400 - number of footballs expected to be used in Olympic competition.

0 - times that football powerhouse Brazil has won an Olympic medal in the sport.

112 - years since golf was last in the Olympics.

2 - Brazilian presidents expected at the opening ceremony: Dilma Rousseff, who is suspended and on the verge of being removed from office, and her arch-rival Michel Temer, who is temporarily replacing her.

450,000 - condoms awaiting the roughly 11,000 athletes, so about 41 each, or two each a day.