77328516 has 12 divisors (see below), whose sum is σ = 180433232. Its totient is φ = 25776168.

The previous prime is 77328487. The next prime is 77328521. The reversal of 77328516 is 61582377.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3222010 + ... + 3222033.

Almost surely, 2^77328516 is an apocalyptic number.

It is an amenable number.

77328516 is an abundant number, since it is smaller than the sum of its proper divisors (103104716).

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

77328516 is a wasteful number, since it uses less digits than its factorization.

77328516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444050 (or 6444048 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 77328516 is about 8793.6634004265. The cubic root of 77328516 is about 426.0362551524.

The spelling of 77328516 in words is "seventy-seven million, three hundred twenty-eight thousand, five hundred sixteen".