74228928 has 28 divisors (see below), whose sum is σ = 196397880. Its totient is φ = 24742912.

The previous prime is 74228927. The next prime is 74228939. The reversal of 74228928 is 82982247.

It is a self number, because there is not a number n which added to its sum of digits gives 74228928.

It is not an unprimeable number, because it can be changed into a prime (74228927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193113 + ... + 193496.

It is an arithmetic number, because the mean of its divisors is an integer number (7014210).

Almost surely, 2^74228928 is an apocalyptic number.

It is an amenable number.

74228928 is an abundant number, since it is smaller than the sum of its proper divisors (122168952).

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

74228928 is a wasteful number, since it uses less digits than its factorization.

74228928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386624 (or 386614 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 74228928 is about 8615.6211615878. The cubic root of 74228928 is about 420.2661351813.

The spelling of 74228928 in words is "seventy-four million, two hundred twenty-eight thousand, nine hundred twenty-eight".