Burma (ⁱ/ˈbɜrmə/ BUR-mə), also known as Myanmar (ⁱ/ˈmjɑːnˌmɑr/ MYAHN-mar, /ˈmaɪænmɑr/ or /ˈmjænmɑr/), is a sovereign state in Southeast Asia bordered by China, Thailand, India, Laos and Bangladesh. One-third of Burma's total perimeter of 1,930 kilometres (1,200 mi) forms an uninterrupted coastline along the Bay of Bengal and the Andaman Sea. Its population of over 60 million makes it the world's 24th most populous country and, at 676,578 km² (261,227 sq mi), it is the world's 40th largest country and the second largest in Southeast Asia.