A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9732480 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 128 137 148 160 185 192 222 240 274 296 320 370 384 411 444 480 548 555 592 640 685 740 822 888 960 1,096 1,110 1,184 1,370 1,480 1,644 1,776 1,920 2,055 2,192 2,220 2,368 2,740 2,960 3,288 3,552 4,110 4,384 4,440 4,736 5,069 5,480 5,920 6,576 7,104 8,220 8,768 8,880 10,138 10,960 11,840 13,152 14,208 15,207 16,440 17,536 17,760 20,276 21,920 23,680 25,345 26,304 30,414 32,880 35,520 40,552 43,840 50,690 52,608 60,828 65,760 71,040 76,035 81,104 87,680 101,380 121,656 131,520 152,070 162,208 202,760 243,312 263,040 304,140 324,416 405,520 486,624 608,280 648,832 811,040 973,248 1,216,560 1,622,080 1,946,496 2,433,120 3,244,160 4,866,240 and 9,732,480, with no remainder.
Since 9,732,480 cannot be divided by just 1 and 9,732,480, it is not a prime number.