18124312 has 32 divisors (see below), whose sum is σ = 36508320. Its totient is φ = 8404480.

The previous prime is 18124289. The next prime is 18124313. The reversal of 18124312 is 21342181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18124313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8718 + ... + 10594.

It is an arithmetic number, because the mean of its divisors is an integer number (1140885).

Almost surely, 2^18124312 is an apocalyptic number.

It is an amenable number.

18124312 is an abundant number, since it is smaller than the sum of its proper divisors (18384008).

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

18124312 is a wasteful number, since it uses less digits than its factorization.

18124312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971 (or 1967 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 18124312 is about 4257.2657892126. The cubic root of 18124312 is about 262.6760699334.

Adding to 18124312 its reverse (21342181), we get a palindrome (39466493).

The spelling of 18124312 in words is "eighteen million, one hundred twenty-four thousand, three hundred twelve".