The number 5,376,888 can be evenly divided by 1 2 3 4 6 8 9 11 12 18 22 24 27 31 33 36 44 54 62 66 72 73 88 93 99 108 124 132 146 186 198 216 219 248 264 279 292 297 341 372 396 438 558 584 594 657 682 744 792 803 837 876 1,023 1,116 1,188 1,314 1,364 1,606 1,674 1,752 1,971 2,046 2,232 2,263 2,376 2,409 2,628 2,728 3,069 3,212 3,348 3,942 4,092 4,526 4,818 5,256 6,138 6,424 6,696 6,789 7,227 7,884 8,184 9,052 9,207 9,636 12,276 13,578 14,454 15,768 18,104 18,414 19,272 20,367 21,681 24,552 24,893 27,156 28,908 36,828 40,734 43,362 49,786 54,312 57,816 61,101 73,656 74,679 81,468 86,724 99,572 122,202 149,358 162,936 173,448 199,144 224,037 244,404 298,716 448,074 488,808 597,432 672,111 896,148 1,344,222 1,792,296 2,688,444 and 5,376,888, with no remainder.
Since 5,376,888 cannot be divided by just 1 and 5,376,888, it is a composite number.