12928331 has 12 divisors (see below), whose sum is σ = 14102712. Its totient is φ = 11846016.

The previous prime is 12928327. The next prime is 12928393. The reversal of 12928331 is 13382921.

It is not a de Polignac number, because 12928331 - 2² = 12928327 is a prime.

It is a super-2 number, since 2×12928331² = 334283484891122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12928294 and 12928303.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 38195 + ... + 38531.

It is an arithmetic number, because the mean of its divisors is an integer number (1175226).

Almost surely, 2^12928331 is an apocalyptic number.

12928331 is a deficient number, since it is larger than the sum of its proper divisors (1174381).

12928331 is a wasteful number, since it uses less digits than its factorization.

12928331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 577 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 12928331 is about 3595.5988374678. The cubic root of 12928331 is about 234.7005753432.

The spelling of 12928331 in words is "twelve million, nine hundred twenty-eight thousand, three hundred thirty-one".