74443728 has 40 divisors (see below), whose sum is σ = 193076928. Its totient is φ = 24716032.

The previous prime is 74443727. The next prime is 74443753. The reversal of 74443728 is 82734447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74443727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9676 + ... + 15572.

Almost surely, 2^74443728 is an apocalyptic number.

It is an amenable number.

74443728 is an abundant number, since it is smaller than the sum of its proper divisors (118633200).

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

74443728 is a wasteful number, since it uses less digits than its factorization.

74443728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171 (or 6165 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 74443728 is about 8628.0778856012. The cubic root of 74443728 is about 420.6711265684.

The spelling of 74443728 in words is "seventy-four million, four hundred forty-three thousand, seven hundred twenty-eight".