18038052 has 30 divisors (see below), whose sum is σ = 47155878. Its totient is φ = 6012576.

The previous prime is 18038051. The next prime is 18038057. The reversal of 18038052 is 25083081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17438976 + 599076 = 4176^2 + 774^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18038051) 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 9 ways as a sum of consecutive naturals, for example, 27513 + ... + 28160.

Almost surely, 2^18038052 is an apocalyptic number.

18038052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18038052 is an abundant number, since it is smaller than the sum of its proper divisors (29117826).

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

18038052 is a wasteful number, since it uses less digits than its factorization.

18038052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55689 (or 55678 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18038052 is about 4247.1227907844. The cubic root of 18038052 is about 262.2586843495.

The spelling of 18038052 in words is "eighteen million, thirty-eight thousand, fifty-two".