78938252 has 6 divisors (see below), whose sum is σ = 138141948. Its totient is φ = 39469124.

The previous prime is 78938221. The next prime is 78938311. The reversal of 78938252 is 25283987.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9867278 + ... + 9867285.

It is an arithmetic number, because the mean of its divisors is an integer number (23023658).

Almost surely, 2^78938252 is an apocalyptic number.

It is an amenable number.

78938252 is a deficient number, since it is larger than the sum of its proper divisors (59203696).

78938252 is a wasteful number, since it uses less digits than its factorization.

78938252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19734567 (or 19734565 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 78938252 is about 8884.7201419066. The cubic root of 78938252 is about 428.9722199706.

The spelling of 78938252 in words is "seventy-eight million, nine hundred thirty-eight thousand, two hundred fifty-two".