77328412 has 12 divisors (see below), whose sum is σ = 154656880. Its totient is φ = 33140736.

The previous prime is 77328401. The next prime is 77328457. The reversal of 77328412 is 21482377.

77328412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380837 + ... + 1380892.

Almost surely, 2^77328412 is an apocalyptic number.

It is an amenable number.

77328412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77328412 is a wasteful number, since it uses less digits than its factorization.

77328412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761740 (or 2761738 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 77328412 is about 8793.6574870756. The cubic root of 77328412 is about 426.0360641586.

The spelling of 77328412 in words is "seventy-seven million, three hundred twenty-eight thousand, four hundred twelve".