There are 1826 billionaires in the world and there are some countries that have hundreds of them.

However, while nations like China may house some of the world's richest people, with 400 billionaires, it doesn't actually have the highest number of billionaires in proportion to the population.

Approved Index, a UK-based business-networking group, crunched the numbers from Forbes' 2015 billionaire list using this week's data and found that the most billionaire-dense nations across the world are pretty surprising.

http://www.businessinsider.com/countries-ranked-by-billionaires-in-proportion-to-population-2015-7?r=UK&IR=T

13. United States
Number of billionaires: 536
Population: 321,369,000
Population per one billionaires: 599,569

The U.S. houses the largest amount of billionaires in the world and continues to dominate the rankings for the world's richest people. You have Microsoft founder Bill Gates who tops the overall wealthiest people in the world list with a net worth of $79.4 billion (£50.9 billion) and legendary investor Warren Buffett with $67.3 billion (£43.2 billion) at third. It ranks lower in the list though when looking at the number of billionaires per proportion of the population.

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11. Norway
Number of billionaires: 10
Population: 5,176,998
Population per one billionaires: 517,700

Norway is rich with natural resources and has a vibrant private sector, so it's little wonder how it managed to carve out 10 billionaires. It is the world's third-largest natural gas exporter and seventh largest oil exporter. It is also home to Stein Erik Hagen, who founded discount supermarket Rimi with his father in the 1970s. He and his family are worth $4.5 billion (£2.8 billion).

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9. Sweden
Number of billionaires: 23
Population: 9,784,445
Population per one billionaires: 425,411

Sweden is famed for its high standards of living as well as its mixed system of high-tech capitalism and extensive welfare benefits. However, it has also fostered 23 billionaires as of this year. This includes Swedish video game programmer and designer Markus Alexej Persson who founded the Mojang video game company which made the insanely popular Minecraft video game.