12428579 has 4 divisors (see below), whose sum is σ = 12968976. Its totient is φ = 11888184.

The previous prime is 12428569. The next prime is 12428597. The reversal of 12428579 is 97582421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97582421 = 1721 ⋅56701.

It is a cyclic number.

It is not a de Polignac number, because 12428579 - 2²⁰ = 11380003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12428509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270164 + ... + 270209.

It is an arithmetic number, because the mean of its divisors is an integer number (3242244).

Almost surely, 2^12428579 is an apocalyptic number.

12428579 is a deficient number, since it is larger than the sum of its proper divisors (540397).

12428579 is an equidigital number, since it uses as much as digits as its factorization.

12428579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540396.

The product of its digits is 40320, while the sum is 38.

The square root of 12428579 is about 3525.4189821920. The cubic root of 12428579 is about 231.6365879437.

The spelling of 12428579 in words is "twelve million, four hundred twenty-eight thousand, five hundred seventy-nine".