Anything from 15650000 to 15749999
15659999
15,700,000.0000001 is one possible answer.
Any number between 15,650,000 and 15,749,999 will round to 15,700,000 when rounded to the nearest hundred thousand.
Anything from 15650000 to 1574999
15,700,000 is already rounded to the nearest hundred thousands.
You have a range of numbers that fit this descripton: from 15650000 to 15749999
The last one.
15659999
15700000
Any number x such that 15,650,000 < x < 15,750,000
It is already rounded to the nearest hundred thousand. You can't round a number to itself.
There is no such number. If you were rounding to the nearest hundred thousand, you would not end up with 157000. 157000 to the nearest hundred thousand is 200000.