Nigeria (full name, The Federal Republic of Nigeria) covers an area of approximately 924,000 sq km with a terrain consisting of southern lowlands merging into central hills and plateaux with mountains in the southeast and plains in the north. Nigeria borders Benin, Cameroon, Chad and Niger, and has 853 km of coastline. The country is divided into 36 states (Abia, Adamawa, Akwa Ibom, Anambra, Bauchi, Bayelsa, Benue, Borno, Cross River, Delta, Ebonyi, Edo, Ekiti, Enugu, Gombe, Imo, Jigawa, Kaduna, Kano, Katsina, Kebbi, Kogi, Kwara, Lagos, Nassarawa, Niger, Ogun, Ondo, Osun, Oyo, Plateau, Rivers, Sokoto, Taraba, Yobe and Zamfara) and one territory (Federal Capital Territory). Abuja is the capital, with a time difference of 1 hour ahead of GMT. The currency is the Nigerian naira, and exports include petroleum, petroleum products, cocoa and rubber. The population of approximately 149,000,000 people has an ethnic mix including 29% Hausa and Fulani, 21% Yoruba, 18% Igbo (Ibo) and 10% Ijaw. Primary languages are English, Yoruba, Ibo and Hausa, and the predominant religions are Islam, Christianity and indigenous beliefs.