The number 4,248,384 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 29 32 42 48 56 58 64 84 87 96 109 112 116 168 174 192 203 218 224 232 327 336 348 406 436 448 464 609 654 672 696 763 812 872 928 1,218 1,308 1,344 1,392 1,526 1,624 1,744 1,856 2,289 2,436 2,616 2,784 3,052 3,161 3,248 3,488 4,578 4,872 5,232 5,568 6,104 6,322 6,496 6,976 9,156 9,483 9,744 10,464 12,208 12,644 12,992 18,312 18,966 19,488 20,928 22,127 24,416 25,288 36,624 37,932 38,976 44,254 48,832 50,576 66,381 73,248 75,864 88,508 101,152 132,762 146,496 151,728 177,016 202,304 265,524 303,456 354,032 531,048 606,912 708,064 1,062,096 1,416,128 2,124,192 and 4,248,384, with no remainder.
Since 4,248,384 cannot be divided by just 1 and 4,248,384, it is a composite number.