18342252 has 108 divisors (see below), whose sum is σ = 51627576. Its totient is φ = 5483520.

The previous prime is 18342251. The next prime is 18342263. The reversal of 18342252 is 25224381.

Its product of digits (3840) is a multiple of the sum of its prime factors (128).

It is not an unprimeable number, because it can be changed into a prime (18342251) 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 35 ways as a sum of consecutive naturals, for example, 426543 + ... + 426585.

Almost surely, 2^18342252 is an apocalyptic number.

18342252 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 18342252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25813788).

18342252 is an abundant number, since it is smaller than the sum of its proper divisors (33285324).

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

18342252 is a wasteful number, since it uses less digits than its factorization.

18342252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 106 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 18342252 is about 4282.7855421443. The cubic root of 18342252 is about 263.7247475505.

The spelling of 18342252 in words is "eighteen million, three hundred forty-two thousand, two hundred fifty-two".