78434592 has 24 divisors (see below), whose sum is σ = 205891056. Its totient is φ = 26144832.

The previous prime is 78434563. The next prime is 78434663. The reversal of 78434592 is 29543487.

It is a tau number, because it is divible by the number of its divisors (24).

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, 408418 + ... + 408609.

It is an arithmetic number, because the mean of its divisors is an integer number (8578794).

Almost surely, 2^78434592 is an apocalyptic number.

It is an amenable number.

78434592 is an abundant number, since it is smaller than the sum of its proper divisors (127456464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78434592 is a wasteful number, since it uses less digits than its factorization.

78434592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817040 (or 817032 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 78434592 is about 8856.3306171348. The cubic root of 78434592 is about 428.0579302610.

The spelling of 78434592 in words is "seventy-eight million, four hundred thirty-four thousand, five hundred ninety-two".