74512428 has 24 divisors (see below), whose sum is σ = 184090032. Its totient is φ = 23376384.

The previous prime is 74512423. The next prime is 74512463. The reversal of 74512428 is 82421547.

It is not an unprimeable number, because it can be changed into a prime (74512423) 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, 182425 + ... + 182832.

It is an arithmetic number, because the mean of its divisors is an integer number (7670418).

Almost surely, 2^74512428 is an apocalyptic number.

It is an amenable number.

74512428 is an abundant number, since it is smaller than the sum of its proper divisors (109577604).

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

74512428 is a wasteful number, since it uses less digits than its factorization.

74512428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365281 (or 365279 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 74512428 is about 8632.0581555038. The cubic root of 74512428 is about 420.8004914889.

The spelling of 74512428 in words is "seventy-four million, five hundred twelve thousand, four hundred twenty-eight".