45999
your answer is least 45250 largest is 45299
Usually that question has a number at the end."What is the greatest number that can be rounded to 20000?" and the answer would be 24999. As written, the question has no answer since there is no greatest number.
The answer will depend on the degree of rounding: to the nearest ten, hundred, thousand?
Rounded off to the nearest whole number it is 92
Rounded off to the nearest whole number it is 73