What is 28?

28 is a whole number that comes after 27 and before 29. It is an even number, meaning it can be divided by 2 without leaving a remainder.

Mathematical Properties

Here are some interesting facts about the number 28:

• Factors: The factors of 28 are 1, 2, 4, 7, 14, and 28.
• Prime Status: It is not a prime number since it has more than two factors.
• Perfect Number: 28 is known as a perfect number because the sum of its proper divisors (1, 2, 4, 7, 14) equals 28.

In Everyday Life

In practical terms, you might encounter the number 28 in various contexts, such as:

• The number of days in February during a common year.
• 28 grams in an ounce, a common measurement in cooking.

In Culture

28 also appears in cultural references, such as:

• 28 Days Later, a popular film.
• 28th birthdays, which are often celebrated as milestones.

Overall, 28 is a number with mathematical significance and various applications in daily life and culture.