12800644 has 12 divisors (see below), whose sum is σ = 23123968. Its totient is φ = 6193800.

The previous prime is 12800621. The next prime is 12800647. The reversal of 12800644 is 44600821.

It is not an unprimeable number, because it can be changed into a prime (12800647) 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, 51492 + ... + 51739.

Almost surely, 2^12800644 is an apocalyptic number.

It is an amenable number.

12800644 is a deficient number, since it is larger than the sum of its proper divisors (10323324).

12800644 is a wasteful number, since it uses less digits than its factorization.

12800644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103266 (or 103264 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 12800644 is about 3577.7987646037. The cubic root of 12800644 is about 233.9253420484.

The spelling of 12800644 in words is "twelve million, eight hundred thousand, six hundred forty-four".