The number 4,338,400 can be evenly divided by 1 2 4 5 8 10 11 16 17 20 22 25 29 32 34 40 44 50 55 58 68 80 85 88 100 110 116 136 145 160 170 176 187 200 220 232 272 275 290 319 340 352 374 400 425 440 464 493 544 550 580 638 680 725 748 800 850 880 928 935 986 1,100 1,160 1,276 1,360 1,450 1,496 1,595 1,700 1,760 1,870 1,972 2,200 2,320 2,465 2,552 2,720 2,900 2,992 3,190 3,400 3,740 3,944 4,400 4,640 4,675 4,930 5,104 5,423 5,800 5,984 6,380 6,800 7,480 7,888 7,975 8,800 9,350 9,860 10,208 10,846 11,600 12,325 12,760 13,600 14,960 15,776 15,950 18,700 19,720 21,692 23,200 24,650 25,520 27,115 29,920 31,900 37,400 39,440 43,384 49,300 51,040 54,230 63,800 74,800 78,880 86,768 98,600 108,460 127,600 135,575 149,600 173,536 197,200 216,920 255,200 271,150 394,400 433,840 542,300 867,680 1,084,600 2,169,200 and 4,338,400, with no remainder.
Since 4,338,400 cannot be divided by just 1 and 4,338,400, it is a composite number.