18097504 has 48 divisors (see below), whose sum is σ = 37836288. Its totient is φ = 8502912.

The previous prime is 18097493. The next prime is 18097507. The reversal of 18097504 is 40579081.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18097504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18097507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49129 + ... + 49495.

It is an arithmetic number, because the mean of its divisors is an integer number (788256).

Almost surely, 2^18097504 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 18097504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18918144).

18097504 is an abundant number, since it is smaller than the sum of its proper divisors (19738784).

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

18097504 is a wasteful number, since it uses less digits than its factorization.

18097504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18097504 is about 4254.1161244141. The cubic root of 18097504 is about 262.5464963744.

The spelling of 18097504 in words is "eighteen million, ninety-seven thousand, five hundred four".