78931412 has 24 divisors (see below), whose sum is σ = 158143104. Its totient is φ = 33767712.

The previous prime is 78931393. The next prime is 78931429. The reversal of 78931412 is 21413987.

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 7 ways as a sum of consecutive naturals, for example, 15938 + ... + 20294.

It is an arithmetic number, because the mean of its divisors is an integer number (6589296).

Almost surely, 2^78931412 is an apocalyptic number.

It is an amenable number.

78931412 is an abundant number, since it is smaller than the sum of its proper divisors (79211692).

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

78931412 is a wasteful number, since it uses less digits than its factorization.

78931412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015 (or 5013 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 78931412 is about 8884.3352030414. The cubic root of 78931412 is about 428.9598294642.

The spelling of 78931412 in words is "seventy-eight million, nine hundred thirty-one thousand, four hundred twelve".