18084736 has 32 divisors (see below), whose sum is σ = 38152080. Its totient is φ = 8509440.

The previous prime is 18084733. The next prime is 18084763. The reversal of 18084736 is 63748081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 18084695 and 18084704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18084733) 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 3 ways as a sum of consecutive naturals, for example, 1980 + ... + 6331.

Almost surely, 2^18084736 is an apocalyptic number.

18084736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18084736 is an abundant number, since it is smaller than the sum of its proper divisors (20067344).

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

18084736 is an equidigital number, since it uses as much as digits as its factorization.

18084736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342 (or 8330 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 18084736 is about 4252.6151953827. The cubic root of 18084736 is about 262.4847386441.

The spelling of 18084736 in words is "eighteen million, eighty-four thousand, seven hundred thirty-six".