78304 has 12 divisors (see below), whose sum is σ = 154224. Its totient is φ = 39136.

The previous prime is 78301. The next prime is 78307. The reversal of 78304 is 40387.

It is an interprime number because it is at equal distance from previous prime (78301) and next prime (78307).

It is a super-2 number, since 2×78304² = 12263032832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1192 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (12852).

2⁷⁸³⁰⁴ is an apocalyptic number.

It is an amenable number.

78304 is a deficient number, since it is larger than the sum of its proper divisors (75920).

78304 is a wasteful number, since it uses less digits than its factorization.

78304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 78304 is about 279.8285189183. The cubic root of 78304 is about 42.7820229041.

The spelling of 78304 in words is "seventy-eight thousand, three hundred four".