223404 has 12 divisors (see below), whose sum is σ = 521304. Its totient is φ = 74464.

The previous prime is 223403. The next prime is 223423. The reversal of 223404 is 404322.

It is a happy number.

223404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (223403) 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, 9297 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (43442).

2²²³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

223404 is an abundant number, since it is smaller than the sum of its proper divisors (297900).

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

223404 is a wasteful number, since it uses less digits than its factorization.

223404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18624 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 223404 is about 472.6563233471. The cubic root of 223404 is about 60.6778682908.

Adding to 223404 its reverse (404322), we get a palindrome (627726).

The spelling of 223404 in words is "two hundred twenty-three thousand, four hundred four", and thus it is an iban number.