12813044 has 24 divisors (see below), whose sum is σ = 23310336. Its totient is φ = 6156000.

The previous prime is 12813037. The next prime is 12813083. The reversal of 12813044 is 44031821.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 23414 + ... + 23954.

It is an arithmetic number, because the mean of its divisors is an integer number (971264).

Almost surely, 2^12813044 is an apocalyptic number.

It is an amenable number.

12813044 is a deficient number, since it is larger than the sum of its proper divisors (10497292).

12813044 is a wasteful number, since it uses less digits than its factorization.

12813044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 12813044 is about 3579.5312542287. The cubic root of 12813044 is about 234.0008522627. Note that the first 3 decimals are identical.

Adding to 12813044 its reverse (44031821), we get a palindrome (56844865).

The spelling of 12813044 in words is "twelve million, eight hundred thirteen thousand, forty-four".