A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2474472 can be evenly divided by 1 2 3 4 6 7 8 11 12 13 14 21 22 24 26 28 33 39 42 44 52 56 66 77 78 84 88 91 103 104 132 143 154 156 168 182 206 231 264 273 286 308 309 312 364 412 429 462 546 572 616 618 721 728 824 858 924 1,001 1,092 1,133 1,144 1,236 1,339 1,442 1,716 1,848 2,002 2,163 2,184 2,266 2,472 2,678 2,884 3,003 3,399 3,432 4,004 4,017 4,326 4,532 5,356 5,768 6,006 6,798 7,931 8,008 8,034 8,652 9,064 9,373 10,712 12,012 13,596 14,729 15,862 16,068 17,304 18,746 23,793 24,024 27,192 28,119 29,458 31,724 32,136 37,492 44,187 47,586 56,238 58,916 63,448 74,984 88,374 95,172 103,103 112,476 117,832 176,748 190,344 206,206 224,952 309,309 353,496 412,412 618,618 824,824 1,237,236 and 2,474,472, with no remainder.
Since 2,474,472 cannot be divided by just 1 and 2,474,472, it is not a prime number.