The number 7,938,000 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 30 35 36 40 42 45 48 49 50 54 56 60 63 70 72 75 80 81 84 90 98 100 105 108 112 120 125 126 135 140 144 147 150 162 168 175 180 189 196 200 210 216 225 240 245 250 252 270 280 294 300 315 324 336 350 360 375 378 392 400 405 420 432 441 450 490 500 504 525 540 560 567 588 600 630 648 675 700 720 735 750 756 784 810 840 875 882 900 945 980 1,000 1,008 1,050 1,080 1,125 1,134 1,176 1,200 1,225 1,260 1,296 1,323 1,350 1,400 1,470 1,500 1,512 1,575 1,620 1,680 1,750 1,764 1,800 1,890 1,960 2,000 2,025 2,100 2,160 2,205 2,250 2,268 2,352 2,450 2,520 2,625 2,646 2,700 2,800 2,835 2,940 3,000 3,024 3,150 3,240 3,375 3,500 3,528 3,600 3,675 3,780 3,920 3,969 4,050 4,200 4,410 4,500 4,536 4,725 4,900 5,040 5,250 5,292 5,400 5,670 5,880 6,000 6,125 6,300 6,480 6,615 6,750 7,000 7,056 7,350 7,560 7,875 7,938 8,100 8,400 8,820 9,000 9,072 9,450 9,800 10,125 10,500 10,584 10,800 11,025 11,340 11,760 12,250 12,600 13,230 13,500 14,000 14,175 14,700 15,120 15,750 15,876 16,200 17,640 18,000 18,375 18,900 19,600 19,845 20,250 21,000 21,168 22,050 22,680 23,625 24,500 25,200 26,460 27,000 28,350 29,400 31,500 31,752 32,400 33,075 35,280 36,750 37,800 39,690 40,500 42,000 44,100 45,360 47,250 49,000 52,920 54,000 55,125 56,700 58,800 63,000 63,504 66,150 70,875 73,500 75,600 79,380 81,000 88,200 94,500 98,000 99,225 105,840 110,250 113,400 126,000 132,300 141,750 147,000 158,760 162,000 165,375 176,400 189,000 198,450 220,500 226,800 264,600 283,500 294,000 317,520 330,750 378,000 396,900 441,000 496,125 529,200 567,000 661,500 793,800 882,000 992,250 1,134,000 1,323,000 1,587,600 1,984,500 2,646,000 3,969,000 and 7,938,000, with no remainder.
Since 7,938,000 cannot be divided by just 1 and 7,938,000, it is a composite number.