A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2833380 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 44 45 53 54 55 60 66 81 90 99 106 108 110 132 135 159 162 165 180 198 212 220 243 265 270 297 318 324 330 396 405 477 486 495 530 540 583 594 636 660 795 810 891 954 972 990 1,060 1,166 1,188 1,215 1,431 1,485 1,590 1,620 1,749 1,782 1,908 1,980 2,332 2,385 2,430 2,673 2,862 2,915 2,970 3,180 3,498 3,564 4,293 4,455 4,770 4,860 5,247 5,346 5,724 5,830 5,940 6,996 7,155 8,586 8,745 8,910 9,540 10,494 10,692 11,660 12,879 13,365 14,310 15,741 17,172 17,490 17,820 20,988 21,465 25,758 26,235 26,730 28,620 31,482 34,980 42,930 47,223 51,516 52,470 53,460 62,964 64,395 78,705 85,860 94,446 104,940 128,790 141,669 157,410 188,892 236,115 257,580 283,338 314,820 472,230 566,676 708,345 944,460 1,416,690 and 2,833,380, with no remainder.
Since 2,833,380 cannot be divided by just 1 and 2,833,380, it is not a prime number.