A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2072000 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 25 28 32 35 37 40 50 56 64 70 74 80 100 112 125 140 148 160 175 185 200 224 250 259 280 296 320 350 370 400 448 500 518 560 592 700 740 800 875 925 1,000 1,036 1,120 1,184 1,295 1,400 1,480 1,600 1,750 1,850 2,000 2,072 2,240 2,368 2,590 2,800 2,960 3,500 3,700 4,000 4,144 4,625 5,180 5,600 5,920 6,475 7,000 7,400 8,000 8,288 9,250 10,360 11,200 11,840 12,950 14,000 14,800 16,576 18,500 20,720 25,900 28,000 29,600 32,375 37,000 41,440 51,800 56,000 59,200 64,750 74,000 82,880 103,600 129,500 148,000 207,200 259,000 296,000 414,400 518,000 1,036,000 and 2,072,000, with no remainder.
Since 2,072,000 cannot be divided by just 1 and 2,072,000, it is not a prime number.