78886812 has 48 divisors (see below), whose sum is σ = 190668800. Its totient is φ = 25365312.

The previous prime is 78886807. The next prime is 78886823. The reversal of 78886812 is 21868887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55689 + ... + 57087.

Almost surely, 2^78886812 is an apocalyptic number.

It is an amenable number.

78886812 is an abundant number, since it is smaller than the sum of its proper divisors (111781988).

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

78886812 is a wasteful number, since it uses less digits than its factorization.

78886812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1568 counting only the distinct ones).

The product of its digits is 344064, while the sum is 48.

The square root of 78886812 is about 8881.8248125033. The cubic root of 78886812 is about 428.8790200101.

The spelling of 78886812 in words is "seventy-eight million, eight hundred eighty-six thousand, eight hundred twelve".