What is 27.53 rounded to the nearest whole number?

When rounding a number to the nearest whole number, you look at the decimal value immediately to the right of the decimal point. In this case, the number 27.53 has a decimal value of 0.53. Since 0.53 is greater than or equal to 0.5, you round the whole number up to 28. Therefore, 27.53 rounded to the nearest whole number is 28.