28474188 has 24 divisors (see below), whose sum is σ = 66694320. Its totient is φ = 9455040.

The previous prime is 28474181. The next prime is 28474189. The reversal of 28474188 is 88147482.

It is not an unprimeable number, because it can be changed into a prime (28474181) 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, 1183 + ... + 7638.

It is an arithmetic number, because the mean of its divisors is an integer number (2778930).

Almost surely, 2^28474188 is an apocalyptic number.

It is an amenable number.

28474188 is an abundant number, since it is smaller than the sum of its proper divisors (38220132).

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

28474188 is a wasteful number, since it uses less digits than its factorization.

28474188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9097 (or 9095 counting only the distinct ones).

The product of its digits is 114688, while the sum is 42.

The square root of 28474188 is about 5336.1210630944. The cubic root of 28474188 is about 305.3634938817.

The spelling of 28474188 in words is "twenty-eight million, four hundred seventy-four thousand, one hundred eighty-eight".