18752228 has 24 divisors (see below), whose sum is σ = 36339744. Its totient is φ = 8395200.

The previous prime is 18752191. The next prime is 18752231. The reversal of 18752228 is 82225781.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 233 + ... + 6128.

It is an arithmetic number, because the mean of its divisors is an integer number (1514156).

Almost surely, 2^18752228 is an apocalyptic number.

It is an amenable number.

18752228 is a deficient number, since it is larger than the sum of its proper divisors (17587516).

18752228 is a wasteful number, since it uses less digits than its factorization.

18752228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6441 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 18752228 is about 4330.3842785600. The cubic root of 18752228 is about 265.6751645602.

The spelling of 18752228 in words is "eighteen million, seven hundred fifty-two thousand, two hundred twenty-eight".