12665928 has 32 divisors (see below), whose sum is σ = 34544160. Its totient is φ = 3838080.

The previous prime is 12665927. The next prime is 12665929. The reversal of 12665928 is 82956621.

It is an interprime number because it is at equal distance from previous prime (12665927) and next prime (12665929).

It is not an unprimeable number, because it can be changed into a prime (12665927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23725 + ... + 24252.

It is an arithmetic number, because the mean of its divisors is an integer number (1079505).

Almost surely, 2^12665928 is an apocalyptic number.

It is an amenable number.

12665928 is an abundant number, since it is smaller than the sum of its proper divisors (21878232).

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

12665928 is a wasteful number, since it uses less digits than its factorization.

12665928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47997 (or 47993 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 12665928 is about 3558.9223087896. The cubic root of 12665928 is about 233.1018238909.

The spelling of 12665928 in words is "twelve million, six hundred sixty-five thousand, nine hundred twenty-eight".