12730444 has 12 divisors (see below), whose sum is σ = 22499568. Its totient is φ = 6302000.

The previous prime is 12730439. The next prime is 12730453. The reversal of 12730444 is 44403721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15352 + ... + 16159.

It is an arithmetic number, because the mean of its divisors is an integer number (1874964).

Almost surely, 2^12730444 is an apocalyptic number.

It is an amenable number.

12730444 is a deficient number, since it is larger than the sum of its proper divisors (9769124).

12730444 is a wasteful number, since it uses less digits than its factorization.

12730444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31616 (or 31614 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 12730444 is about 3567.9747756956. The cubic root of 12730444 is about 233.4969346974.

The spelling of 12730444 in words is "twelve million, seven hundred thirty thousand, four hundred forty-four".