78940692 has 36 divisors (see below), whose sum is σ = 208222560. Its totient is φ = 25169232.

The previous prime is 78940679. The next prime is 78940709. The reversal of 78940692 is 29604987.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46842 + ... + 48497.

It is an arithmetic number, because the mean of its divisors is an integer number (5783960).

Almost surely, 2^78940692 is an apocalyptic number.

It is an amenable number.

78940692 is an abundant number, since it is smaller than the sum of its proper divisors (129281868).

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

78940692 is a wasteful number, since it uses less digits than its factorization.

78940692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95372 (or 95367 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 78940692 is about 8884.8574552437. The cubic root of 78940692 is about 428.9766398025.

The spelling of 78940692 in words is "seventy-eight million, nine hundred forty thousand, six hundred ninety-two".