Q: Is 1,225,840 a Composite Number?

Why is 1,225,840 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 1,225,840 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 55 56 70 77 80 88 110 112 140 154 176 199 220 280 308 385 398 440 560 616 770 796 880 995 1,232 1,393 1,540 1,592 1,990 2,189 2,786 3,080 3,184 3,980 4,378 5,572 6,160 6,965 7,960 8,756 10,945 11,144 13,930 15,323 15,920 17,512 21,890 22,288 27,860 30,646 35,024 43,780 55,720 61,292 76,615 87,560 111,440 122,584 153,230 175,120 245,168 306,460 612,920 and 1,225,840, with no remainder.

Since 1,225,840 cannot be divided by just 1 and 1,225,840, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).