77328812 has 24 divisors (see below), whose sum is σ = 148023120. Its totient is φ = 35055360.

The previous prime is 77328791. The next prime is 77328821. The reversal of 77328812 is 21882377.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15848 + ... + 20144.

It is an arithmetic number, because the mean of its divisors is an integer number (6167630).

Almost surely, 2^77328812 is an apocalyptic number.

It is an amenable number.

77328812 is a deficient number, since it is larger than the sum of its proper divisors (70694308).

77328812 is a wasteful number, since it uses less digits than its factorization.

77328812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721 (or 4719 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 77328812 is about 8793.6802307111. The cubic root of 77328812 is about 426.0367987491.

The spelling of 77328812 in words is "seventy-seven million, three hundred twenty-eight thousand, eight hundred twelve".