12726428 has 48 divisors (see below), whose sum is σ = 27565440. Its totient is φ = 5054400.

The previous prime is 12726407. The next prime is 12726433. The reversal of 12726428 is 82462721.

It is a junction number, because it is equal to n+sod(n) for n = 12726394 and 12726403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10283 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (574280).

Almost surely, 2^12726428 is an apocalyptic number.

It is an amenable number.

12726428 is an abundant number, since it is smaller than the sum of its proper divisors (14839012).

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

12726428 is a wasteful number, since it uses less digits than its factorization.

12726428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1216 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 12726428 is about 3567.4119470563. The cubic root of 12726428 is about 233.4723788031.

The spelling of 12726428 in words is "twelve million, seven hundred twenty-six thousand, four hundred twenty-eight".