74127728 has 20 divisors (see below), whose sum is σ = 145768200. Its totient is φ = 36510144.

The previous prime is 74127679. The next prime is 74127733. The reversal of 74127728 is 82772147.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74127691 and 74127700.

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, 33503 + ... + 35646.

It is an arithmetic number, because the mean of its divisors is an integer number (7288410).

Almost surely, 2^74127728 is an apocalyptic number.

It is an amenable number.

74127728 is a deficient number, since it is larger than the sum of its proper divisors (71640472).

74127728 is a wasteful number, since it uses less digits than its factorization.

74127728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69224 (or 69218 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 74127728 is about 8609.7461054319. The cubic root of 74127728 is about 420.0750583920.

The spelling of 74127728 in words is "seventy-four million, one hundred twenty-seven thousand, seven hundred twenty-eight".