12328515 has 12 divisors (see below), whose sum is σ = 21369504. Its totient is φ = 6575184.

The previous prime is 12328507. The next prime is 12328517. The reversal of 12328515 is 51582321.

It is a happy number.

12328515 is a `hidden beast` number, since 123 + 28 + 515 = 666.

12328515 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12328515 - 2³ = 12328507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12328517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136939 + ... + 137028.

It is an arithmetic number, because the mean of its divisors is an integer number (1780792).

Almost surely, 2^12328515 is an apocalyptic number.

12328515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12328515 is a deficient number, since it is larger than the sum of its proper divisors (9040989).

12328515 is a wasteful number, since it uses less digits than its factorization.

12328515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273978 (or 273975 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12328515 is about 3511.1985133285. The cubic root of 12328515 is about 231.0132673551.

The spelling of 12328515 in words is "twelve million, three hundred twenty-eight thousand, five hundred fifteen".