18015052 has 12 divisors (see below), whose sum is σ = 34392456. Its totient is φ = 8188640.

The previous prime is 18015029. The next prime is 18015073. The reversal of 18015052 is 25051081.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 204673 + ... + 204760.

It is an arithmetic number, because the mean of its divisors is an integer number (2866038).

Almost surely, 2^18015052 is an apocalyptic number.

It is an amenable number.

18015052 is a deficient number, since it is larger than the sum of its proper divisors (16377404).

18015052 is a wasteful number, since it uses less digits than its factorization.

18015052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409448 (or 409446 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 18015052 is about 4244.4142116433. The cubic root of 18015052 is about 262.1471698079.

The spelling of 18015052 in words is "eighteen million, fifteen thousand, fifty-two".