78428360 has 32 divisors (see below), whose sum is σ = 178597440. Its totient is φ = 30992064.

The previous prime is 78428359. The next prime is 78428381. The reversal of 78428360 is 6382487.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 8492 + ... + 15131.

It is an arithmetic number, because the mean of its divisors is an integer number (5581170).

Almost surely, 2^78428360 is an apocalyptic number.

It is an amenable number.

78428360 is an abundant number, since it is smaller than the sum of its proper divisors (100169080).

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

78428360 is a wasteful number, since it uses less digits than its factorization.

78428360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23717 (or 23713 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 78428360 is about 8855.9787714289. The cubic root of 78428360 is about 428.0465928838.

The spelling of 78428360 in words is "seventy-eight million, four hundred twenty-eight thousand, three hundred sixty".