78432168 has 32 divisors (see below), whose sum is σ = 196536960. Its totient is φ = 26083200.

The previous prime is 78432157. The next prime is 78432173. The reversal of 78432168 is 86123487.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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, 7393 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (6141780).

Almost surely, 2^78432168 is an apocalyptic number.

It is an amenable number.

78432168 is an abundant number, since it is smaller than the sum of its proper divisors (118104792).

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

78432168 is a wasteful number, since it uses less digits than its factorization.

78432168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617 (or 7613 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 78432168 is about 8856.1937648179. The cubic root of 78432168 is about 428.0535205438.

It can be divided in two parts, 7843 and 2168, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 78432168 in words is "seventy-eight million, four hundred thirty-two thousand, one hundred sixty-eight".