78938448 has 40 divisors (see below), whose sum is σ = 208903296. Its totient is φ = 25670400.

The previous prime is 78938443. The next prime is 78938449. The reversal of 78938448 is 84483987.

It is a self number, because there is not a number n which added to its sum of digits gives 78938448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78938443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18088 + ... + 22023.

Almost surely, 2^78938448 is an apocalyptic number.

It is an amenable number.

78938448 is an abundant number, since it is smaller than the sum of its proper divisors (129964848).

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

78938448 is a wasteful number, since it uses less digits than its factorization.

78938448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40163 (or 40157 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 78938448 is about 8884.7311720727. The cubic root of 78938448 is about 428.9725750096.

The spelling of 78938448 in words is "seventy-eight million, nine hundred thirty-eight thousand, four hundred forty-eight".