78130868 has 12 divisors (see below), whose sum is σ = 139046880. Its totient is φ = 38403192.

The previous prime is 78130859. The next prime is 78130879. The reversal of 78130868 is 86803187.

It is a super-2 number, since 2×78130868² = 12208865068866848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165296 + ... + 165767.

It is an arithmetic number, because the mean of its divisors is an integer number (11587240).

Almost surely, 2^78130868 is an apocalyptic number.

It is an amenable number.

78130868 is a deficient number, since it is larger than the sum of its proper divisors (60916012).

78130868 is a wasteful number, since it uses less digits than its factorization.

78130868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331126 (or 331124 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 78130868 is about 8839.1667028063. The cubic root of 78130868 is about 427.5046894827.

The spelling of 78130868 in words is "seventy-eight million, one hundred thirty thousand, eight hundred sixty-eight".