18404466 has 16 divisors (see below), whose sum is σ = 37804224. Its totient is φ = 5968944.

The previous prime is 18404453. The next prime is 18404467. The reversal of 18404466 is 66440481.

It is not an unprimeable number, because it can be changed into a prime (18404467) 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, 41230 + ... + 41673.

It is an arithmetic number, because the mean of its divisors is an integer number (2362764).

Almost surely, 2^18404466 is an apocalyptic number.

18404466 is an abundant number, since it is smaller than the sum of its proper divisors (19399758).

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

18404466 is a wasteful number, since it uses less digits than its factorization.

18404466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82945.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 18404466 is about 4290.0426571306. The cubic root of 18404466 is about 264.0225818608.

The spelling of 18404466 in words is "eighteen million, four hundred four thousand, four hundred sixty-six".