18675228 has 48 divisors (see below), whose sum is σ = 51198336. Its totient is φ = 5223360.

The previous prime is 18675199. The next prime is 18675247. The reversal of 18675228 is 82257681.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3726 + ... + 7157.

It is an arithmetic number, because the mean of its divisors is an integer number (1066632).

Almost surely, 2^18675228 is an apocalyptic number.

It is an amenable number.

18675228 is an abundant number, since it is smaller than the sum of its proper divisors (32523108).

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

18675228 is a wasteful number, since it uses less digits than its factorization.

18675228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914 (or 10912 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 18675228 is about 4321.4844671710. The cubic root of 18675228 is about 265.3110291316.

The spelling of 18675228 in words is "eighteen million, six hundred seventy-five thousand, two hundred twenty-eight".