23806 has 4 divisors (see below), whose sum is σ = 35712. Its totient is φ = 11902.

The previous prime is 23801. The next prime is 23813. The reversal of 23806 is 60832.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5950 + ... + 5953.

It is an arithmetic number, because the mean of its divisors is an integer number (8928).

2²³⁸⁰⁶ is an apocalyptic number.

23806 is a deficient number, since it is larger than the sum of its proper divisors (11906).

23806 is a wasteful number, since it uses less digits than its factorization.

23806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11905.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 23806 is about 154.2919310917. The cubic root of 23806 is about 28.7670598182.

The spelling of 23806 in words is "twenty-three thousand, eight hundred six".