78432884 has 24 divisors (see below), whose sum is σ = 138841920. Its totient is φ = 38767104.

The previous prime is 78432881. The next prime is 78432899. The reversal of 78432884 is 48823487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78432881) 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, 218297 + ... + 218655.

It is an arithmetic number, because the mean of its divisors is an integer number (5785080).

Almost surely, 2^78432884 is an apocalyptic number.

It is an amenable number.

78432884 is a deficient number, since it is larger than the sum of its proper divisors (60409036).

78432884 is a wasteful number, since it uses less digits than its factorization.

78432884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 78432884 is about 8856.2341884121. The cubic root of 78432884 is about 428.0548230935.

The spelling of 78432884 in words is "seventy-eight million, four hundred thirty-two thousand, eight hundred eighty-four".