Passage: Akiruno (あきる野市, Akiruno-shi) is a city located in the western portion of Tokyo Metropolis, Japan. As of 1 February 2016, the city had an estimated population of 80,464, and a population density of 1100 persons per km². Its total area is 73.47 square kilometres (28.37 sq mi).

Question: What is Akiruno's total square area in miles?
28.37