What is the meaning of "4" in the number 4028?

An Arabic numeral. "4" has many meanings, depending on how you understand it. Examples are as follows:

1, the driver doesn't like 4 because the driver thinks it's dead because it's homophonic.

2. Musicians like 4 very much because its homonym in the music spectrum is "hair", which means 1234 Doraemon. In music, 4 stands for hair.

3, when playing poker fortune-telling, it is also conducive to small wealth. The number 4 (pronounced si in Chinese and four in English) is a natural number between 3 and 5. The smallest composite of positive integers is also the first composite. Introduce even numbers, which are Arabic numerals. 4 is a simple Arabic numeral. The factor of the minimum composite number of cartoon number 4 * * is 1, 2,4. Height composite number. 4 1 is the only pair of intermediate numbers in twin prime numbers that cannot be divisible by 6. The third square number in a natural number. 2+2=2×2=22, 4 is the only natural number that can make this kind of equation hold. The first non-Fibonacci number in a natural number. Minimum Smith number.