12403404 has 72 divisors (see below), whose sum is σ = 35773920. Its totient is φ = 3589632.

The previous prime is 12403397. The next prime is 12403423. The reversal of 12403404 is 40430421.

12403404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7177 + ... + 8735.

It is an arithmetic number, because the mean of its divisors is an integer number (496860).

Almost surely, 2^12403404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12403404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17886960).

12403404 is an abundant number, since it is smaller than the sum of its proper divisors (23370516).

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

12403404 is a wasteful number, since it uses less digits than its factorization.

12403404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1594 counting only the distinct ones).

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

The square root of 12403404 is about 3521.8466746864. The cubic root of 12403404 is about 231.4800832491.

Adding to 12403404 its reverse (40430421), we get a palindrome (52833825).

The spelling of 12403404 in words is "twelve million, four hundred three thousand, four hundred four".