78924272 has 20 divisors (see below), whose sum is σ = 174761136. Its totient is φ = 33824640.

The previous prime is 78924269. The next prime is 78924337. The reversal of 78924272 is 27242987.

It is a Smith number, since the sum of its digits (41) 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 in 3 ways as a sum of consecutive naturals, for example, 352229 + ... + 352452.

Almost surely, 2^78924272 is an apocalyptic number.

It is an amenable number.

78924272 is an abundant number, since it is smaller than the sum of its proper divisors (95836864).

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

78924272 is a wasteful number, since it uses less digits than its factorization.

78924272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704696 (or 704690 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 78924272 is about 8883.9333630999. The cubic root of 78924272 is about 428.9468947510.

The spelling of 78924272 in words is "seventy-eight million, nine hundred twenty-four thousand, two hundred seventy-two".