12730404 has 12 divisors (see below), whose sum is σ = 29704304. Its totient is φ = 4243464.

The previous prime is 12730381. The next prime is 12730409. The reversal of 12730404 is 40403721.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12730409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530422 + ... + 530445.

Almost surely, 2^12730404 is an apocalyptic number.

It is an amenable number.

12730404 is an abundant number, since it is smaller than the sum of its proper divisors (16973900).

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

12730404 is a wasteful number, since it uses less digits than its factorization.

12730404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060874 (or 1060872 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12730404 is about 3567.9691702704. The cubic root of 12730404 is about 233.4966901423.

The spelling of 12730404 in words is "twelve million, seven hundred thirty thousand, four hundred four".