18265228 has 12 divisors (see below), whose sum is σ = 32034240. Its totient is φ = 9112592.

The previous prime is 18265211. The next prime is 18265271. The reversal of 18265228 is 82256281.

It is a junction number, because it is equal to n+sod(n) for n = 18265193 and 18265202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2851 + ... + 6682.

It is an arithmetic number, because the mean of its divisors is an integer number (2669520).

Almost surely, 2^18265228 is an apocalyptic number.

It is an amenable number.

18265228 is a deficient number, since it is larger than the sum of its proper divisors (13769012).

18265228 is a wasteful number, since it uses less digits than its factorization.

18265228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016 (or 10014 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 18265228 is about 4273.7838036101. The cubic root of 18265228 is about 263.3550794767.

The spelling of 18265228 in words is "eighteen million, two hundred sixty-five thousand, two hundred twenty-eight".