18038252 has 12 divisors (see below), whose sum is σ = 31676736. Its totient is φ = 8987760.

The previous prime is 18038243. The next prime is 18038257. The reversal of 18038252 is 25283081.

It is not an unprimeable number, because it can be changed into a prime (18038257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6524 + ... + 8867.

It is an arithmetic number, because the mean of its divisors is an integer number (2639728).

Almost surely, 2^18038252 is an apocalyptic number.

It is an amenable number.

18038252 is a deficient number, since it is larger than the sum of its proper divisors (13638484).

18038252 is a wasteful number, since it uses less digits than its factorization.

18038252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15688 (or 15686 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18038252 is about 4247.1463360708. The cubic root of 18038252 is about 262.2596536253.

The spelling of 18038252 in words is "eighteen million, thirty-eight thousand, two hundred fifty-two".