A four digit integer is first rounded to ten, then rounded to hundreds, and then rounded to thousands. At this time, the number is the third power of 3 * 10. What is the maximum and minimum value of this number! Please tell me how to calculate it

A four digit integer is first rounded to ten, then rounded to hundreds, and then rounded to thousands. At this time, the number is the third power of 3 * 10. What is the maximum and minimum value of this number! Please tell me how to calculate it

The minimum is 2445 and the maximum is 3444