78426382 has 16 divisors (see below), whose sum is σ = 123369840. Its totient is φ = 37340352.

The previous prime is 78426371. The next prime is 78426391. The reversal of 78426382 is 28362487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5028 + ... + 13495.

It is an arithmetic number, because the mean of its divisors is an integer number (7710615).

Almost surely, 2^78426382 is an apocalyptic number.

78426382 is a deficient number, since it is larger than the sum of its proper divisors (44943458).

78426382 is a wasteful number, since it uses less digits than its factorization.

78426382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18627.

The product of its digits is 129024, while the sum is 40.

The square root of 78426382 is about 8855.8670947570. The cubic root of 78426382 is about 428.0429943416.

The spelling of 78426382 in words is "seventy-eight million, four hundred twenty-six thousand, three hundred eighty-two".