7878

7878 is an even natural number that comes after 7877 and before 7879. It is a composite number whose prime factors are 2, 3, 13, and 101, so 7878 equals 2 × 3 × 13 × 101, or 6 × 1313.

Its decimal representation features an alternating pattern of 7 and 8, forming the four-digit sequence 7-8-7-8. The number is not a palindrome (reversing the digits yields 8787), and the sum of its digits is 30, which means it is not a Harshad number in base 10.

In other numeral systems, 7878 has representations such as hexadecimal 0x1EC6 and binary 1111011000110.

In common usage, 7878 primarily appears as a numeric label or identifier in databases and systems rather than as a significant mathematical constant or cultural reference.