A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3460200 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 25 30 40 50 60 73 75 79 100 120 146 150 158 200 219 237 292 300 316 365 395 438 474 584 600 632 730 790 876 948 1,095 1,185 1,460 1,580 1,752 1,825 1,896 1,975 2,190 2,370 2,920 3,160 3,650 3,950 4,380 4,740 5,475 5,767 5,925 7,300 7,900 8,760 9,480 10,950 11,534 11,850 14,600 15,800 17,301 21,900 23,068 23,700 28,835 34,602 43,800 46,136 47,400 57,670 69,204 86,505 115,340 138,408 144,175 173,010 230,680 288,350 346,020 432,525 576,700 692,040 865,050 1,153,400 1,730,100 and 3,460,200, with no remainder.
Since 3,460,200 cannot be divided by just 1 and 3,460,200, it is not a prime number.