18231252 has 24 divisors (see below), whose sum is σ = 45812256. Its totient is φ = 5609568.

The previous prime is 18231229. The next prime is 18231271. The reversal of 18231252 is 25213281.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 58278 + ... + 58589.

It is an arithmetic number, because the mean of its divisors is an integer number (1908844).

Almost surely, 2^18231252 is an apocalyptic number.

18231252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18231252 is an abundant number, since it is smaller than the sum of its proper divisors (27581004).

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

18231252 is a wasteful number, since it uses less digits than its factorization.

18231252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116887 (or 116885 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 18231252 is about 4269.8070214004. The cubic root of 18231252 is about 263.1916851122.

The spelling of 18231252 in words is "eighteen million, two hundred thirty-one thousand, two hundred fifty-two".