12930644 has 6 divisors (see below), whose sum is σ = 22628634. Its totient is φ = 6465320.

The previous prime is 12930581. The next prime is 12930647. The reversal of 12930644 is 44603921.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 114244 = 3580^2 + 338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12930647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616327 + ... + 1616334.

It is an arithmetic number, because the mean of its divisors is an integer number (3771439).

Almost surely, 2^12930644 is an apocalyptic number.

It is an amenable number.

12930644 is a deficient number, since it is larger than the sum of its proper divisors (9697990).

12930644 is a wasteful number, since it uses less digits than its factorization.

12930644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232665 (or 3232663 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12930644 is about 3595.9204663062. The cubic root of 12930644 is about 234.7145712219.

The spelling of 12930644 in words is "twelve million, nine hundred thirty thousand, six hundred forty-four".