South Africa is notable for its 1,739 miles of coastline that stretches along the South Atlantic and Indian oceans. It is the 25th-largest country in the world by land area, and with nearly 53 million people, is the world's 24th-most populous nation. South Africa is a multiethnic society made up of a wide variety of cultures, languages, and religions. Its pluralistic nature is reflected in the constitution's recognition of 11 official languages, which is among the highest number of any country in the world. Though English is regularly used in public and commercial life, it is only the fifth most-spoken language at home. About 80% of South Africans are of black African ancestry, divided between a variety of ethnic groups speaking different Bantu languages, nine of which have official status. The rest of the country consists of Africa's largest populations of European, Asian, and multiracial ancestry. All ethnic and linguistic groups have representation in the country's constitutional democracy, which is made up of a parliamentary republic and nine provinces. Since the end of apartheid, South Africa's multicultural character has become integral to its national identity, as signified by the Rainbow Nation concept.