2404 has 6 divisors (see below), whose sum is σ = 4214. Its totient is φ = 1200.

The previous prime is 2399. The next prime is 2411. The reversal of 2404 is 4042.

2404 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 2304 + 100 = 48^2 + 10^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 15 and base 16.

It is an unprimeable number.

2404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297 + ... + 304.

2²⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

2404 is a deficient number, since it is larger than the sum of its proper divisors (1810).

2404 is a wasteful number, since it uses less digits than its factorization.

2404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2404 is about 49.0306026885. The cubic root of 2404 is about 13.3960930171.

Adding to 2404 its reverse (4042), we get a palindrome (6446).

It can be divided in two parts, 2 and 404, that multiplied together give a palindrome (808).

The spelling of 2404 in words is "two thousand, four hundred four", and thus it is an iban number.