27 (number) facts for kids
Twenty-seven is a number that comes right after twenty-six and before twenty-eight. It is an odd number, meaning it cannot be divided evenly by two. Twenty-seven is also special because it is a perfect cube. This means you can get 27 by multiplying a number by itself three times (3 × 3 × 3 = 27).
Contents
Understanding the Number 27
What Makes 27 Unique?
Twenty-seven is a composite number, which means it has more than two factors (numbers that divide into it evenly). Its factors are 1, 3, 9, and 27. It's the smallest odd composite number that is also a perfect cube.
27 in Mathematics
In mathematics, 27 is known as the third perfect cube after 1 and 8. It is also a Harshad number in base 10, because it is divisible by the sum of its digits (2 + 7 = 9, and 27 ÷ 9 = 3). This makes it an interesting number for studying number properties.
27 in Everyday Life
Sports and Games
The number 27 appears in many sports and games. For example, in baseball, a standard game has 27 outs (three outs per inning for nine innings). In roulette, 27 is one of the numbers on the wheel. These are just a few examples of how 27 shows up around us.
Science and Nature
In chemistry, the element Cobalt has an atomic number of 27. This means a cobalt atom has 27 protons in its nucleus. In astronomy, some star clusters or galaxy groups might contain around 27 main objects, though this varies greatly.
Culture and History
The number 27 has appeared in various cultural contexts. For instance, in some calendar systems, 27 might relate to specific cycles or periods. Historically, certain events or groups might have involved the number 27 in their structure or timing.
See also
In Spanish: Veintisiete para niños
