Indonesia is an island republic of Southeast Asia, constituting most of the Malay Archipelago. The country consists of nearly 13,700 islands. Indonesia also shares the island of New Guinea: The western section, known as Irian Jaya (West Irian) and the eastern section is part of Papua New Guinea. Marine frontiers of Indonesia include the South China Sea, the Celebes Sea, the Pacific Ocean, and the Indian Ocean. Indonesia has an area of 1,919,443 sq. km (741,101 sq. mi.). The capital and largest city of Indonesia is Jakarta.