A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7595328 can be evenly divided by 1 2 3 4 6 8 12 13 16 17 24 26 32 34 39 48 51 52 64 68 78 96 102 104 136 156 179 192 204 208 221 272 312 358 408 416 442 537 544 624 663 716 816 832 884 1,074 1,088 1,248 1,326 1,432 1,632 1,768 2,148 2,327 2,496 2,652 2,864 3,043 3,264 3,536 4,296 4,654 5,304 5,728 6,086 6,981 7,072 8,592 9,129 9,308 10,608 11,456 12,172 13,962 14,144 17,184 18,258 18,616 21,216 24,344 27,924 34,368 36,516 37,232 39,559 42,432 48,688 55,848 73,032 74,464 79,118 97,376 111,696 118,677 146,064 148,928 158,236 194,752 223,392 237,354 292,128 316,472 446,784 474,708 584,256 632,944 949,416 1,265,888 1,898,832 2,531,776 3,797,664 and 7,595,328, with no remainder.
Since 7,595,328 cannot be divided by just 1 and 7,595,328, it is not a prime number.