Country area vs population

Here is something interesting based on 2011-2012 estimates:

United Kingdom - Area: 243,610 km2, Population: 62,262,000
Malaysia - Area: 329,847 km2, Population: 28,334,135
Australia - Area: 7,617,930 km2, Population: 22,670,931

Note: km2 here refer to km square.

While working on one of my exercises for one of my exams (which explains my absence for a while. Studying and working is not easy in Malaysia!), I was surprised to come across the figure for Australia based on one qualified actuary per number of population. I then Google-d this information and when comparing Australia and Malaysia, I was shocked to see such a high population in Malaysia. Knowing from the map, UK is about the same size as Malaysia, I checked information for UK and look at that, UK has more than twice the population of Malaysia and is smaller than Malaysia! Wow. I always thought Malaysia is much more dense in population compared to UK, but I guess it's because I wasn't living in London. I was living in smaller cities. I might actually enjoy living in Australia. It already sounds like a healthy country!