78488672 has 24 divisors (see below), whose sum is σ = 154795536. Its totient is φ = 39175552.

The previous prime is 78488671. The next prime is 78488681. The reversal of 78488672 is 27688487.

It is a self number, because there is not a number n which added to its sum of digits gives 78488672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78488671) 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 3 ways as a sum of consecutive naturals, for example, 19853 + ... + 23475.

It is an arithmetic number, because the mean of its divisors is an integer number (6449814).

Almost surely, 2^78488672 is an apocalyptic number.

It is an amenable number.

78488672 is a deficient number, since it is larger than the sum of its proper divisors (76306864).

78488672 is a wasteful number, since it uses less digits than its factorization.

78488672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310 (or 4302 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 78488672 is about 8859.3832742466. The cubic root of 78488672 is about 428.1562884551.

The spelling of 78488672 in words is "seventy-eight million, four hundred eighty-eight thousand, six hundred seventy-two".