A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8882368 can be evenly divided by 1 2 4 8 11 16 22 31 32 37 44 62 64 74 88 121 124 148 176 242 248 296 341 352 407 484 496 592 682 704 814 968 992 1,147 1,184 1,364 1,628 1,936 1,984 2,294 2,368 2,728 3,256 3,751 3,872 4,477 4,588 5,456 6,512 7,502 7,744 8,954 9,176 10,912 12,617 13,024 15,004 17,908 18,352 21,824 25,234 26,048 30,008 35,816 36,704 50,468 60,016 71,632 73,408 100,936 120,032 138,787 143,264 201,872 240,064 277,574 286,528 403,744 555,148 807,488 1,110,296 2,220,592 4,441,184 and 8,882,368, with no remainder.
Since 8,882,368 cannot be divided by just 1 and 8,882,368, it is not a prime number.