A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3732000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 125 150 160 200 240 250 300 311 375 400 480 500 600 622 750 800 933 1,000 1,200 1,244 1,500 1,555 1,866 2,000 2,400 2,488 3,000 3,110 3,732 4,000 4,665 4,976 6,000 6,220 7,464 7,775 9,330 9,952 12,000 12,440 14,928 15,550 18,660 23,325 24,880 29,856 31,100 37,320 38,875 46,650 49,760 62,200 74,640 77,750 93,300 116,625 124,400 149,280 155,500 186,600 233,250 248,800 311,000 373,200 466,500 622,000 746,400 933,000 1,244,000 1,866,000 and 3,732,000, with no remainder.
Since 3,732,000 cannot be divided by just 1 and 3,732,000, it is not a prime number.