78464916 has 24 divisors (see below), whose sum is σ = 203427840. Its totient is φ = 26154936.

The previous prime is 78464909. The next prime is 78464921. The reversal of 78464916 is 61946487.

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, 363156 + ... + 363371.

It is an arithmetic number, because the mean of its divisors is an integer number (8476160).

Almost surely, 2^78464916 is an apocalyptic number.

It is an amenable number.

78464916 is an abundant number, since it is smaller than the sum of its proper divisors (124962924).

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

78464916 is a wasteful number, since it uses less digits than its factorization.

78464916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726540 (or 726532 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 78464916 is about 8858.0424474034. The cubic root of 78464916 is about 428.1130877109.

The spelling of 78464916 in words is "seventy-eight million, four hundred sixty-four thousand, nine hundred sixteen".