18024312 has 96 divisors (see below), whose sum is σ = 50169600. Its totient is φ = 5378688.

The previous prime is 18024311. The next prime is 18024317. The reversal of 18024312 is 21342081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18024311) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 383473 + ... + 383519.

It is an arithmetic number, because the mean of its divisors is an integer number (522600).

Almost surely, 2^18024312 is an apocalyptic number.

18024312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18024312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25084800).

18024312 is an abundant number, since it is smaller than the sum of its proper divisors (32145288).

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

18024312 is a wasteful number, since it uses less digits than its factorization.

18024312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18024312 is about 4245.5049169681. The cubic root of 18024312 is about 262.1920779397.

Adding to 18024312 its reverse (21342081), we get a palindrome (39366393).

It can be divided in two parts, 18024 and 312, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 18024312 in words is "eighteen million, twenty-four thousand, three hundred twelve".