12803144 has 8 divisors (see below), whose sum is σ = 24005910. Its totient is φ = 6401568.

The previous prime is 12803137. The next prime is 12803171. The reversal of 12803144 is 44130821.

It can be written as a sum of positive squares in only one way, i.e., 9424900 + 3378244 = 3070^2 + 1838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800189 + ... + 800204.

Almost surely, 2^12803144 is an apocalyptic number.

It is an amenable number.

12803144 is a deficient number, since it is larger than the sum of its proper divisors (11202766).

12803144 is a wasteful number, since it uses less digits than its factorization.

12803144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600399 (or 1600395 counting only the distinct ones).

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

The square root of 12803144 is about 3578.1481243794. The cubic root of 12803144 is about 233.9405698053.

Adding to 12803144 its reverse (44130821), we get a palindrome (56933965).

The spelling of 12803144 in words is "twelve million, eight hundred three thousand, one hundred forty-four".