18625228 has 12 divisors (see below), whose sum is σ = 32642512. Its totient is φ = 9298800.

The previous prime is 18625219. The next prime is 18625231. The reversal of 18625228 is 82252681.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18625193 and 18625202.

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, 48 + ... + 6103.

Almost surely, 2^18625228 is an apocalyptic number.

It is an amenable number.

18625228 is a deficient number, since it is larger than the sum of its proper divisors (14017284).

18625228 is a wasteful number, since it uses less digits than its factorization.

18625228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912 (or 6910 counting only the distinct ones).

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

The square root of 18625228 is about 4315.6955406979. The cubic root of 18625228 is about 265.0740412546.

The spelling of 18625228 in words is "eighteen million, six hundred twenty-five thousand, two hundred twenty-eight".