18232305 has 96 divisors (see below), whose sum is σ = 38916864. Its totient is φ = 7091712.

The previous prime is 18232289. The next prime is 18232327. The reversal of 18232305 is 50323281.

It is not a de Polignac number, because 18232305 - 2⁴ = 18232289 is a prime.

It is a super-2 number, since 2×18232305² = 664833891226050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 492747 + ... + 492783.

It is an arithmetic number, because the mean of its divisors is an integer number (405384).

Almost surely, 2^18232305 is an apocalyptic number.

18232305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18232305 is an abundant number, since it is smaller than the sum of its proper divisors (20684559).

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

18232305 is a wasteful number, since it uses less digits than its factorization.

18232305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 18232305 is about 4269.9303273004. The cubic root of 18232305 is about 263.1967521533.

Adding to 18232305 its reverse (50323281), we get a palindrome (68555586).

The spelling of 18232305 in words is "eighteen million, two hundred thirty-two thousand, three hundred five".