The Republic of Indonesia (pronounced /ˌɪndoʊˈniːziə/ or /ˌɪndəˈniːʒə/) (Indonesian: Republik Indonesia) is a country in Southeast Asia and Oceania. Indonesia comprises 17,508 islands. With a population of around 230 million people, it is the world's fourth most populous country, and has the world's largest population of Muslims. Indonesia is a republic, with an elected legislature and president. The nation's capital city is Jakarta.