28

The number 28 is a natural number that comes after 27 and before 29. It’s considered an even number because it divides evenly by 2. In mathematics, 28 has interesting properties: it's a perfect number because the sum of its divisors (1, 2, 4, 7, 14) equals itself. It appears in various contexts, such as the number of days in February during a common year or a lunar cycle. Numerically, it’s used in counting, measuring, and in various calculations across different fields of science and everyday life.