Answer:
15268 is already a wholenumbe.
In order to round you need a decimal in the number.
Here are the rules for rounded if you forgot to put the decimal:
x < 5 = Round down.
x ≥ 5 = Round-Up!
Examples:
1.5 (5 ≥ 5 So we round up) = 2
1.37 (7 ≥ 5 So we round up) = 1.4
5.4 (4 < 5 So we round down) = 5.0 or 5
5.42 (2 < 5 So we round down) = 5.4