Q: Is 280,400 a Composite Number?
A: Yes, 280,400 is a composite number.
The number 280,400 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 701 1,402 2,804 3,505 5,608 7,010 11,216 14,020 17,525 28,040 35,050 56,080 70,100 140,200 and 280,400, with no remainder.
Since 280,400 cannot be divided by just 1 and 280,400, it is a composite number.