A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3232020 can be evenly divided by 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 59 60 66 83 110 118 132 165 166 177 220 236 249 295 330 332 354 415 498 590 649 660 708 830 885 913 996 1,180 1,245 1,298 1,660 1,770 1,826 1,947 2,490 2,596 2,739 3,245 3,540 3,652 3,894 4,565 4,897 4,980 5,478 6,490 7,788 9,130 9,735 9,794 10,956 12,980 13,695 14,691 18,260 19,470 19,588 24,485 27,390 29,382 38,940 48,970 53,867 54,780 58,764 73,455 97,940 107,734 146,910 161,601 215,468 269,335 293,820 323,202 538,670 646,404 808,005 1,077,340 1,616,010 and 3,232,020, with no remainder.
Since 3,232,020 cannot be divided by just 1 and 3,232,020, it is not a prime number.