About 46.68 million people. Sudan has a land area of 1882000 square kilometers, which is the third largest country in Africa and the largest country in the world, with an area of 15. There are 18 states in Sudan, with a population of about 46.68 million in 2022. The main ethnic groups include Arabs, Beja, Fur, Nuba and blacks. Sudan is one of the least developed countries in the world announced by the United Nations, with a single economic structure, weak foundation, backward industry and strong dependence on the natural environment and foreign aid.