Page numbers are numerical indicators that help identify the order of pages in a document, book, or report. They are typically found at the top or bottom of each page and assist readers in navigating through the content. Page numbers can be formatted in various styles, such as Arabic numerals (1, 2, 3) or Roman numerals (I, II, III), depending on the document's design. In academic and professional writing, page numbers are essential for referencing and citation purposes. They allow readers to locate specific information quickly and ensure that all parts of a document are easily accessible. Properly formatted page numbers contribute to the overall organization and clarity of the work.