210404 has 12 divisors (see below), whose sum is σ = 384384. Its totient is φ = 100584.

The previous prime is 210403. The next prime is 210407. The reversal of 210404 is 404012.

210404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210401) 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, 1052 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (32032).

2²¹⁰⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

210404 is a deficient number, since it is larger than the sum of its proper divisors (173980).

210404 is a wasteful number, since it uses less digits than its factorization.

210404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314 (or 2312 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 210404 is about 458.6981578337. The cubic root of 210404 is about 59.4773116896.

Adding to 210404 its reverse (404012), we get a palindrome (614416).

The spelling of 210404 in words is "two hundred ten thousand, four hundred four", and thus it is an iban number.