78427568 has 40 divisors (see below), whose sum is σ = 157361952. Its totient is φ = 37836288.

The previous prime is 78427561. The next prime is 78427577. The reversal of 78427568 is 86572487.

It is not an unprimeable number, because it can be changed into a prime (78427561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80621 + ... + 81587.

Almost surely, 2^78427568 is an apocalyptic number.

It is an amenable number.

78427568 is an abundant number, since it is smaller than the sum of its proper divisors (78934384).

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

78427568 is a wasteful number, since it uses less digits than its factorization.

78427568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1143 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 78427568 is about 8855.9340557617. The cubic root of 78427568 is about 428.0451520188.

The spelling of 78427568 in words is "seventy-eight million, four hundred twenty-seven thousand, five hundred sixty-eight".