yes it is
1024
512
256
128
64
32
16
8
Twenty-four thousand.
20400
Four hundred and twenty-six thousand and one.
If you are referring to USD then it would be like this: One-Thousand, Four-Hundred Twenty, and no/100's. If just putting the number into words then it is: One-Thousand, Four-Hundred and Twenty just like it sound when you say the number.
twenty thousand four = 20,004
4,002,020
Four hundred twenty-three thousand
The spelling of the number is "twenty-four" (and no hundredths). In US currency, this would be "twenty-four dollars" (and no cents).
$624,000
two thousand four hundred and twenty
The number 920,400 is "nine hundred twenty thousand four hundred."
Yes, they are just different ways to say the number. Two thousand four hundred is technically more correct, twenty-four hundred is shorthand.