78642032 has 40 divisors (see below), whose sum is σ = 174845952. Its totient is φ = 33566400.

The previous prime is 78642029. The next prime is 78642043. The reversal of 78642032 is 23024687.

It is a self number, because there is not a number n which added to its sum of digits gives 78642032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29057 + ... + 31647.

Almost surely, 2^78642032 is an apocalyptic number.

It is an amenable number.

78642032 is an abundant number, since it is smaller than the sum of its proper divisors (96203920).

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

78642032 is a wasteful number, since it uses less digits than its factorization.

78642032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 78642032 is about 8868.0342804931. The cubic root of 78642032 is about 428.4349670089.

The spelling of 78642032 in words is "seventy-eight million, six hundred forty-two thousand, thirty-two".