18000252 has 24 divisors (see below), whose sum is σ = 46667600. Its totient is φ = 6000048.

The previous prime is 18000221. The next prime is 18000259. The reversal of 18000252 is 25200081.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000259) 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, 83227 + ... + 83442.

Almost surely, 2^18000252 is an apocalyptic number.

18000252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18000252 is an abundant number, since it is smaller than the sum of its proper divisors (28667348).

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

18000252 is a wasteful number, since it uses less digits than its factorization.

18000252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166682 (or 166674 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 18000252 is about 4242.6703855002. The cubic root of 18000252 is about 262.0753624278.

The spelling of 18000252 in words is "eighteen million, two hundred fifty-two", and thus it is an aban number.