23404 has 6 divisors (see below), whose sum is σ = 40964. Its totient is φ = 11700.

The previous prime is 23399. The next prime is 23417. The reversal of 23404 is 40432.

It is a nialpdrome in base 8 and base 13.

It is an unprimeable number.

23404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2922 + ... + 2929.

2²³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

23404 is a deficient number, since it is larger than the sum of its proper divisors (17560).

23404 is a wasteful number, since it uses less digits than its factorization.

23404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855 (or 5853 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 23404 is about 152.9836592581. The cubic root of 23404 is about 28.6042147439.

Adding to 23404 its reverse (40432), we get a palindrome (63836).

The spelling of 23404 in words is "twenty-three thousand, four hundred four", and thus it is an iban number.