12403044 has 30 divisors (see below), whose sum is σ = 32424854. Its totient is φ = 4134240.

The previous prime is 12403043. The next prime is 12403051. The reversal of 12403044 is 44030421.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 82944 = 3510^2 + 288^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12403043) 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 in 9 ways as a sum of consecutive naturals, for example, 18817 + ... + 19464.

Almost surely, 2^12403044 is an apocalyptic number.

It is an amenable number.

12403044 is an abundant number, since it is smaller than the sum of its proper divisors (20021810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12403044 is a wasteful number, since it uses less digits than its factorization.

12403044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38297 (or 38286 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12403044 is about 3521.7955647652. The cubic root of 12403044 is about 231.4778437124.

Adding to 12403044 its reverse (44030421), we get a palindrome (56433465).

The spelling of 12403044 in words is "twelve million, four hundred three thousand, forty-four".