78688484 has 24 divisors (see below), whose sum is σ = 162805440. Its totient is φ = 32560416.

The previous prime is 78688469. The next prime is 78688487. The reversal of 78688484 is 48488687.

78688484 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

78688484 is a modest number, since divided by 8484 gives 7868 as remainder.

78688484 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (78688487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47642 + ... + 49265.

It is an arithmetic number, because the mean of its divisors is an integer number (6783560).

Almost surely, 2^78688484 is an apocalyptic number.

It is an amenable number.

78688484 is an abundant number, since it is smaller than the sum of its proper divisors (84116956).

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

78688484 is a wasteful number, since it uses less digits than its factorization.

78688484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96947 (or 96945 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The square root of 78688484 is about 8870.6529635647. The cubic root of 78688484 is about 428.5193058939.

The spelling of 78688484 in words is "seventy-eight million, six hundred eighty-eight thousand, four hundred eighty-four".