74235728 has 20 divisors (see below), whose sum is σ = 164379360. Its totient is φ = 31815264.

The previous prime is 74235709. The next prime is 74235739. The reversal of 74235728 is 82753247.

It is a junction number, because it is equal to n+sod(n) for n = 74235691 and 74235700.

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, 331298 + ... + 331521.

It is an arithmetic number, because the mean of its divisors is an integer number (8218968).

Almost surely, 2^74235728 is an apocalyptic number.

It is an amenable number.

74235728 is an abundant number, since it is smaller than the sum of its proper divisors (90143632).

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

74235728 is a wasteful number, since it uses less digits than its factorization.

74235728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662834 (or 662828 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 74235728 is about 8616.0157845724. The cubic root of 74235728 is about 420.2789681048.

The spelling of 74235728 in words is "seventy-four million, two hundred thirty-five thousand, seven hundred twenty-eight".