74448728 has 16 divisors (see below), whose sum is σ = 140050680. Its totient is φ = 37101888.

The previous prime is 74448719. The next prime is 74448779. The reversal of 74448728 is 82784447.

It is a super-2 number, since 2×74448728² = 11085226201635968, which contains 22 as substring.

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, 12701 + ... + 17612.

Almost surely, 2^74448728 is an apocalyptic number.

It is an amenable number.

74448728 is a deficient number, since it is larger than the sum of its proper divisors (65601952).

74448728 is a wasteful number, since it uses less digits than its factorization.

74448728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30626 (or 30622 counting only the distinct ones).

The product of its digits is 401408, while the sum is 44.

The square root of 74448728 is about 8628.3676324088. The cubic root of 74448728 is about 420.6805444585.

The spelling of 74448728 in words is "seventy-four million, four hundred forty-eight thousand, seven hundred twenty-eight".