a digit (number) as opposed to a letter--
They are all numeric characters, exactly as you have written it.
Exactly as you have done in the question: 45000
Numeric characters are symbols used to represent numbers. The most common examples are the digits 0 through 9, which form the basis of the decimal numeral system. Other examples include special numeric symbols like fractions (e.g., ½), percentages (e.g., 25%), and scientific notation (e.g., 3.5 × 10²). In computing, numeric characters can also include representations in different numeral systems, such as binary (0 and 1) or hexadecimal (0-9, A-F).
3.918208205 X 10^11 I think but I'm stupid so probably wrong
Hindu-Arabic Numeral
Group1 is considered Alpha-Numeric because it has both alphabet characters and numeric characters.
They are all numeric characters, exactly as you have written it.
ruby
In Excel all columns default numeric characters to numbers.
00.9
It is the same as 350
The term alpha characters refers to those characters that are letters. This is in contrast with numeric characters, which are numbers.
Letters and numbers only. No symbols, punctuation, or special characters. IE abcdefghijklmnopqrtsuvwxyz1234567890
9.00 is the same as 9
Exactly as you have done in the question: 45000
Without the leading zero: 9057606387
1975