78690792 has 16 divisors (see below), whose sum is σ = 196727040. Its totient is φ = 26230256.

The previous prime is 78690779. The next prime is 78690809. The reversal of 78690792 is 29709687.

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, 1639368 + ... + 1639415.

It is an arithmetic number, because the mean of its divisors is an integer number (12295440).

Almost surely, 2^78690792 is an apocalyptic number.

It is an amenable number.

78690792 is an abundant number, since it is smaller than the sum of its proper divisors (118036248).

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

78690792 is a wasteful number, since it uses less digits than its factorization.

78690792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278792 (or 3278788 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 78690792 is about 8870.7830544998. The cubic root of 78690792 is about 428.5234954646.

The spelling of 78690792 in words is "seventy-eight million, six hundred ninety thousand, seven hundred ninety-two".