The number 3,272,976 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 34 36 42 48 51 56 63 68 72 84 102 112 119 126 136 144 153 168 191 204 238 252 272 306 336 357 382 408 476 504 573 612 714 764 816 952 1,008 1,071 1,146 1,224 1,337 1,428 1,528 1,719 1,904 2,142 2,292 2,448 2,674 2,856 3,056 3,247 3,438 4,011 4,284 4,584 5,348 5,712 6,494 6,876 8,022 8,568 9,168 9,741 10,696 12,033 12,988 13,752 16,044 17,136 19,482 21,392 22,729 24,066 25,976 27,504 29,223 32,088 38,964 45,458 48,132 51,952 58,446 64,176 68,187 77,928 90,916 96,264 116,892 136,374 155,856 181,832 192,528 204,561 233,784 272,748 363,664 409,122 467,568 545,496 818,244 1,090,992 1,636,488 and 3,272,976, with no remainder.
Since 3,272,976 cannot be divided by just 1 and 3,272,976, it is a composite number.