78938230 has 32 divisors (see below), whose sum is σ = 162756864. Its totient is φ = 27002976.

The previous prime is 78938221. The next prime is 78938311. The reversal of 78938230 is 3283987.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38409 + ... + 40411.

It is an arithmetic number, because the mean of its divisors is an integer number (5086152).

Almost surely, 2^78938230 is an apocalyptic number.

78938230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78938230 is an abundant number, since it is smaller than the sum of its proper divisors (83818634).

78938230 is a wasteful number, since it uses less digits than its factorization.

78938230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 78938230 is about 8884.7189038258. The cubic root of 78938230 is about 428.9721801192.

The spelling of 78938230 in words is "seventy-eight million, nine hundred thirty-eight thousand, two hundred thirty".