12328305 has 16 divisors (see below), whose sum is σ = 21518784. Its totient is φ = 5977280.

The previous prime is 12328291. The next prime is 12328307. The reversal of 12328305 is 50382321.

It is not a de Polignac number, because 12328305 - 2⁵ = 12328273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12328307) 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 15 ways as a sum of consecutive naturals, for example, 37194 + ... + 37523.

It is an arithmetic number, because the mean of its divisors is an integer number (1344924).

Almost surely, 2^12328305 is an apocalyptic number.

12328305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12328305 is a deficient number, since it is larger than the sum of its proper divisors (9190479).

12328305 is a wasteful number, since it uses less digits than its factorization.

12328305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74736.

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

The square root of 12328305 is about 3511.1686088822. The cubic root of 12328305 is about 231.0119556789.

The spelling of 12328305 in words is "twelve million, three hundred twenty-eight thousand, three hundred five".