79378816 has 32 divisors (see below), whose sum is σ = 172516680. Its totient is φ = 36080640.

The previous prime is 79378807. The next prime is 79378823. The reversal of 79378816 is 61887397.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 79378816.

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, 26781 + ... + 29596.

Almost surely, 2^79378816 is an apocalyptic number.

It is an amenable number.

79378816 is an abundant number, since it is smaller than the sum of its proper divisors (93137864).

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

79378816 is a wasteful number, since it uses less digits than its factorization.

79378816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56402 (or 56390 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 79378816 is about 8909.4789971131. The cubic root of 79378816 is about 429.7687886256.

The spelling of 79378816 in words is "seventy-nine million, three hundred seventy-eight thousand, eight hundred sixteen".