18308064 has 24 divisors (see below), whose sum is σ = 48058920. Its totient is φ = 6102656.

The previous prime is 18308063. The next prime is 18308089. The reversal of 18308064 is 46080381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18308063) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 95259 + ... + 95450.

It is an arithmetic number, because the mean of its divisors is an integer number (2002455).

Almost surely, 2^18308064 is an apocalyptic number.

It is an amenable number.

18308064 is an abundant number, since it is smaller than the sum of its proper divisors (29750856).

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

18308064 is a wasteful number, since it uses less digits than its factorization.

18308064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190722 (or 190714 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18308064 is about 4278.7923529893. The cubic root of 18308064 is about 263.5607940506.

The spelling of 18308064 in words is "eighteen million, three hundred eight thousand, sixty-four".