78931026 has 24 divisors (see below), whose sum is σ = 173918160. Its totient is φ = 25864056.

The previous prime is 78931007. The next prime is 78931081. The reversal of 78931026 is 62013987.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 36100 + ... + 38223.

It is an arithmetic number, because the mean of its divisors is an integer number (7246590).

Almost surely, 2^78931026 is an apocalyptic number.

78931026 is an abundant number, since it is smaller than the sum of its proper divisors (94987134).

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

78931026 is a wasteful number, since it uses less digits than its factorization.

78931026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74390 (or 74387 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 78931026 is about 8884.3134793860. The cubic root of 78931026 is about 428.9591302125.

The spelling of 78931026 in words is "seventy-eight million, nine hundred thirty-one thousand, twenty-six".