Even number is another name for positive even number in mathematics. Mathematically, as opposed to odd numbers (positive odd numbers), it can be expressed as 2n numbers (n is an integer greater than or equal to 1), and even numbers must be divisible by 2. It is worth noting that 0 is not an even number (as stipulated by the International Mathematical Association in 2002 and China in 2004), because 0 is not a positive number.
Extended data:
1. Singular?
1 and [[an odd number] are opposite to even numbers and can be expressed as 2n+ 1 (Arabic numerals).
2. ["singular"], as opposed to plural, refers to a single quantity represented by the word itself in some languages. For example, in English, countable nouns have both singular and plural forms, indicating that a person or thing is singular and more than one person or thing is plural.
Second, even numbers
1, cultural significance
Even numbers are usually regarded as auspicious numbers (some numbers may be exceptional because of homophonic, such as "4"). For example, "yes man" is one of the most commonly used blessing words in China. In many areas, two-day marriage is chosen, while in western countries, even numbers are regarded as unlucky numbers.
2. Features
This number is divided by two, and there is no remainder.
Third, the difference between odd and even.
There is a difference between odd and even numbers, not as some people say: the main difference lies in the occasion of use. But because odd and even numbers are generally used as terms in mathematics to classify all integers; Even and odd numbers are only positive integers, and negative numbers are not mentioned in ordinary daily language, so they are often heard.