18406488 has 16 divisors (see below), whose sum is σ = 46016280. Its totient is φ = 6135488.

The previous prime is 18406483. The next prime is 18406489. The reversal of 18406488 is 88460481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18406483) 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, 383445 + ... + 383492.

Almost surely, 2^18406488 is an apocalyptic number.

It is an amenable number.

18406488 is an abundant number, since it is smaller than the sum of its proper divisors (27609792).

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

18406488 is a wasteful number, since it uses less digits than its factorization.

18406488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766946 (or 766942 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 18406488 is about 4290.2783126506. The cubic root of 18406488 is about 264.0322504219.

The spelling of 18406488 in words is "eighteen million, four hundred six thousand, four hundred eighty-eight".