12928279 has 32 divisors (see below), whose sum is σ = 17248896. Its totient is φ = 9400320.

The previous prime is 12928273. The next prime is 12928297. The reversal of 12928279 is 97282921.

It is not a de Polignac number, because 12928279 - 2⁵ = 12928247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928273) 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 31 ways as a sum of consecutive naturals, for example, 94299 + ... + 94435.

It is an arithmetic number, because the mean of its divisors is an integer number (539028).

Almost surely, 2^12928279 is an apocalyptic number.

12928279 is a deficient number, since it is larger than the sum of its proper divisors (4320617).

12928279 is a wasteful number, since it uses less digits than its factorization.

12928279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its digits is 36288, while the sum is 40.

The square root of 12928279 is about 3595.5916063980. The cubic root of 12928279 is about 234.7002606739.

The spelling of 12928279 in words is "twelve million, nine hundred twenty-eight thousand, two hundred seventy-nine".