Q: Is 21,649,194 a Composite Number?

Why is 21,649,194 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 21,649,194 can be evenly divided by 1 2 3 6 7 9 14 17 18 21 27 34 42 51 54 63 81 102 119 126 153 162 189 238 306 357 378 459 567 714 918 1,071 1,123 1,134 1,377 2,142 2,246 2,754 3,213 3,369 6,426 6,738 7,861 9,639 10,107 15,722 19,091 19,278 20,214 23,583 30,321 38,182 47,166 57,273 60,642 70,749 90,963 114,546 133,637 141,498 171,819 181,926 212,247 267,274 343,638 400,911 424,494 515,457 636,741 801,822 1,030,914 1,202,733 1,273,482 1,546,371 2,405,466 3,092,742 3,608,199 7,216,398 10,824,597 and 21,649,194, with no remainder.

Since 21,649,194 cannot be divided by just 1 and 21,649,194, 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).