18712252 has 12 divisors (see below), whose sum is σ = 35265496. Its totient is φ = 8636400.

The previous prime is 18712247. The next prime is 18712259. The reversal of 18712252 is 25221781.

It is a self number, because there is not a number n which added to its sum of digits gives 18712252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18712259) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 179874 + ... + 179977.

Almost surely, 2^18712252 is an apocalyptic number.

It is an amenable number.

18712252 is a deficient number, since it is larger than the sum of its proper divisors (16553244).

18712252 is a wasteful number, since it uses less digits than its factorization.

18712252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359868 (or 359866 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 18712252 is about 4325.7660593241. The cubic root of 18712252 is about 265.4862414742.

The spelling of 18712252 in words is "eighteen million, seven hundred twelve thousand, two hundred fifty-two".