18536028 has 24 divisors (see below), whose sum is σ = 49429632. Its totient is φ = 5295984.

The previous prime is 18535991. The next prime is 18536057. The reversal of 18536028 is 82063581.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18536028.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 110250 + ... + 110417.

It is an arithmetic number, because the mean of its divisors is an integer number (2059568).

Almost surely, 2^18536028 is an apocalyptic number.

It is an amenable number.

18536028 is an abundant number, since it is smaller than the sum of its proper divisors (30893604).

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

18536028 is a wasteful number, since it uses less digits than its factorization.

18536028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220681 (or 220679 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18536028 is about 4305.3487663603. The cubic root of 18536028 is about 264.6501994364.

The spelling of 18536028 in words is "eighteen million, five hundred thirty-six thousand, twenty-eight".