18315264 has 96 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 5529600.

The previous prime is 18315257. The next prime is 18315301. The reversal of 18315264 is 46251381.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67449 + ... + 67719.

It is an arithmetic number, because the mean of its divisors is an integer number (556920).

Almost surely, 2^18315264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18315264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26732160).

18315264 is an abundant number, since it is smaller than the sum of its proper divisors (35149056).

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

18315264 is a wasteful number, since it uses less digits than its factorization.

18315264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 287 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 18315264 is about 4279.6336291790. The cubic root of 18315264 is about 263.5953396477.

The spelling of 18315264 in words is "eighteen million, three hundred fifteen thousand, two hundred sixty-four".