18846228 has 12 divisors (see below), whose sum is σ = 43974560. Its totient is φ = 6282072.

The previous prime is 18846211. The next prime is 18846239. The reversal of 18846228 is 82264881.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 785248 + ... + 785271.

Almost surely, 2^18846228 is an apocalyptic number.

It is an amenable number.

18846228 is an abundant number, since it is smaller than the sum of its proper divisors (25128332).

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

18846228 is a wasteful number, since it uses less digits than its factorization.

18846228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570526 (or 1570524 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 18846228 is about 4341.2242512913. The cubic root of 18846228 is about 266.1183448374.

The spelling of 18846228 in words is "eighteen million, eight hundred forty-six thousand, two hundred twenty-eight".