12728492 has 24 divisors (see below), whose sum is σ = 25536000. Its totient is φ = 5438160.

The previous prime is 12728479. The next prime is 12728503. The reversal of 12728492 is 29482721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13517 + ... + 14427.

It is an arithmetic number, because the mean of its divisors is an integer number (1064000).

Almost surely, 2^12728492 is an apocalyptic number.

It is an amenable number.

12728492 is an abundant number, since it is smaller than the sum of its proper divisors (12807508).

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

12728492 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (12728491) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (1421).

12728492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1419 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 12728492 is about 3567.7012206742. The cubic root of 12728492 is about 233.4849998083.

The spelling of 12728492 in words is "twelve million, seven hundred twenty-eight thousand, four hundred ninety-two".