A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4850280 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 324 360 405 486 499 540 648 810 972 998 1,080 1,215 1,497 1,620 1,944 1,996 2,430 2,495 2,994 3,240 3,992 4,491 4,860 4,990 5,988 7,485 8,982 9,720 9,980 11,976 13,473 14,970 17,964 19,960 22,455 26,946 29,940 35,928 40,419 44,910 53,892 59,880 67,365 80,838 89,820 107,784 121,257 134,730 161,676 179,640 202,095 242,514 269,460 323,352 404,190 485,028 538,920 606,285 808,380 970,056 1,212,570 1,616,760 2,425,140 and 4,850,280, with no remainder.
Since 4,850,280 cannot be divided by just 1 and 4,850,280, it is not a prime number.