77348012 has 24 divisors (see below), whose sum is σ = 162839040. Its totient is φ = 31404240.

The previous prime is 77347981. The next prime is 77348023. The reversal of 77348012 is 21084377.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77348012.

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 7 ways as a sum of consecutive naturals, for example, 72164 + ... + 73227.

It is an arithmetic number, because the mean of its divisors is an integer number (6784960).

Almost surely, 2^77348012 is an apocalyptic number.

It is an amenable number.

77348012 is an abundant number, since it is smaller than the sum of its proper divisors (85491028).

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

77348012 is a wasteful number, since it uses less digits than its factorization.

77348012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145421 (or 145419 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 77348012 is about 8794.7718560518. The cubic root of 77348012 is about 426.0720561105.

The spelling of 77348012 in words is "seventy-seven million, three hundred forty-eight thousand, twelve".