18124212 has 48 divisors (see below), whose sum is σ = 44255232. Its totient is φ = 5766240.

The previous prime is 18124201. The next prime is 18124229. The reversal of 18124212 is 21242181.

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 15 ways as a sum of consecutive naturals, for example, 30583 + ... + 31169.

It is an arithmetic number, because the mean of its divisors is an integer number (921984).

Almost surely, 2^18124212 is an apocalyptic number.

18124212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18124212 is an abundant number, since it is smaller than the sum of its proper divisors (26131020).

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

18124212 is a wasteful number, since it uses less digits than its factorization.

18124212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 706 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 18124212 is about 4257.2540445691. The cubic root of 18124212 is about 262.6755868318.

Adding to 18124212 its reverse (21242181), we get a palindrome (39366393).

It can be divided in two parts, 18124 and 212, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 18124212 in words is "eighteen million, one hundred twenty-four thousand, two hundred twelve".