A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2272032 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 23 24 28 32 36 42 46 48 49 56 63 69 72 84 92 96 98 112 126 138 144 147 161 168 184 196 207 224 252 276 288 294 322 336 343 368 392 414 441 483 504 552 588 644 672 686 736 784 828 882 966 1,008 1,029 1,104 1,127 1,176 1,288 1,372 1,449 1,568 1,656 1,764 1,932 2,016 2,058 2,208 2,254 2,352 2,576 2,744 2,898 3,087 3,312 3,381 3,528 3,864 4,116 4,508 4,704 5,152 5,488 5,796 6,174 6,624 6,762 7,056 7,728 7,889 8,232 9,016 10,143 10,976 11,592 12,348 13,524 14,112 15,456 15,778 16,464 18,032 20,286 23,184 23,667 24,696 27,048 31,556 32,928 36,064 40,572 46,368 47,334 49,392 54,096 63,112 71,001 81,144 94,668 98,784 108,192 126,224 142,002 162,288 189,336 252,448 284,004 324,576 378,672 568,008 757,344 1,136,016 and 2,272,032, with no remainder.
Since 2,272,032 cannot be divided by just 1 and 2,272,032, it is not a prime number.