The number 7,407,648 can be evenly divided by 1 2 3 4 6 8 9 12 16 17 18 24 32 34 36 48 51 68 72 89 96 102 136 144 153 178 204 267 272 288 289 306 356 408 534 544 578 612 712 801 816 867 1,068 1,156 1,224 1,424 1,513 1,602 1,632 1,734 2,136 2,312 2,448 2,601 2,848 3,026 3,204 3,468 4,272 4,539 4,624 4,896 5,202 6,052 6,408 6,936 8,544 9,078 9,248 10,404 12,104 12,816 13,617 13,872 18,156 20,808 24,208 25,632 25,721 27,234 27,744 36,312 41,616 48,416 51,442 54,468 72,624 77,163 83,232 102,884 108,936 145,248 154,326 205,768 217,872 231,489 308,652 411,536 435,744 462,978 617,304 823,072 925,956 1,234,608 1,851,912 2,469,216 3,703,824 and 7,407,648, with no remainder.
Since 7,407,648 cannot be divided by just 1 and 7,407,648, it is a composite number.