78974432 has 12 divisors (see below), whose sum is σ = 155480976. Its totient is φ = 39487200.

The previous prime is 78974411. The next prime is 78974447. The reversal of 78974432 is 23447987.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1233944 + ... + 1234007.

It is an arithmetic number, because the mean of its divisors is an integer number (12956748).

Almost surely, 2^78974432 is an apocalyptic number.

It is an amenable number.

78974432 is a deficient number, since it is larger than the sum of its proper divisors (76506544).

78974432 is a wasteful number, since it uses less digits than its factorization.

78974432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467961 (or 2467953 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 78974432 is about 8886.7559885484. The cubic root of 78974432 is about 429.0377473247.

The spelling of 78974432 in words is "seventy-eight million, nine hundred seventy-four thousand, four hundred thirty-two".