12928307 has 6 divisors (see below), whose sum is σ = 15039108. Its totient is φ = 11081364.

The previous prime is 12928301. The next prime is 12928327. The reversal of 12928307 is 70382921.

It is a de Polignac number, because none of the positive numbers 2^k-12928307 is a prime.

It is a super-2 number, since 2×12928307² = 334282243772498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12928301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131873 + ... + 131970.

It is an arithmetic number, because the mean of its divisors is an integer number (2506518).

Almost surely, 2^12928307 is an apocalyptic number.

12928307 is a deficient number, since it is larger than the sum of its proper divisors (2110801).

12928307 is an equidigital number, since it uses as much as digits as its factorization.

12928307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263857 (or 263850 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12928307 is about 3595.5955000528. The cubic root of 12928307 is about 234.7004301113.

The spelling of 12928307 in words is "twelve million, nine hundred twenty-eight thousand, three hundred seven".