18036044 has 24 divisors (see below), whose sum is σ = 34231008. Its totient is φ = 8265600.

The previous prime is 18036013. The next prime is 18036047. The reversal of 18036044 is 44063081.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (18036047) 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 7 ways as a sum of consecutive naturals, for example, 6704 + ... + 9000.

It is an arithmetic number, because the mean of its divisors is an integer number (1426292).

Almost surely, 2^18036044 is an apocalyptic number.

It is an amenable number.

18036044 is a deficient number, since it is larger than the sum of its proper divisors (16194964).

18036044 is a wasteful number, since it uses less digits than its factorization.

18036044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 18036044 is about 4246.8863888736. The cubic root of 18036044 is about 262.2489524232.

The spelling of 18036044 in words is "eighteen million, thirty-six thousand, forty-four".