A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4682880 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 270 271 288 320 360 384 432 480 540 542 576 640 720 813 864 960 1,080 1,084 1,152 1,355 1,440 1,626 1,728 1,920 2,160 2,168 2,439 2,710 2,880 3,252 3,456 4,065 4,320 4,336 4,878 5,420 5,760 6,504 7,317 8,130 8,640 8,672 9,756 10,840 12,195 13,008 14,634 16,260 17,280 17,344 19,512 21,680 24,390 26,016 29,268 32,520 34,688 36,585 39,024 43,360 48,780 52,032 58,536 65,040 73,170 78,048 86,720 97,560 104,064 117,072 130,080 146,340 156,096 173,440 195,120 234,144 260,160 292,680 312,192 390,240 468,288 520,320 585,360 780,480 936,576 1,170,720 1,560,960 2,341,440 and 4,682,880, with no remainder.
Since 4,682,880 cannot be divided by just 1 and 4,682,880, it is not a prime number.