18230304 has 48 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 5960448.

The previous prime is 18230297. The next prime is 18230309. The reversal of 18230304 is 40303281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18230309) 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, 3297 + ... + 6879.

It is an arithmetic number, because the mean of its divisors is an integer number (1016064).

Almost surely, 2^18230304 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 18230304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24385536).

18230304 is an abundant number, since it is smaller than the sum of its proper divisors (30540768).

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

18230304 is a wasteful number, since it uses less digits than its factorization.

18230304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649 (or 3641 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 18230304 is about 4269.6960079144. The cubic root of 18230304 is about 263.1871231648.

Adding to 18230304 its reverse (40303281), we get a palindrome (58533585).

The spelling of 18230304 in words is "eighteen million, two hundred thirty thousand, three hundred four".