2305806 has 8 divisors (see below), whose sum is σ = 4611624. Its totient is φ = 768600.

The previous prime is 2305781. The next prime is 2305837. The reversal of 2305806 is 6085032.

2305806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2305806 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 192145 + ... + 192156.

It is an arithmetic number, because the mean of its divisors is an integer number (576453).

2^2305806 is an apocalyptic number.

2305806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2305806 is a wasteful number, since it uses less digits than its factorization.

2305806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384306.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2305806 is about 1518.4880638319. The cubic root of 2305806 is about 132.1115906686. Note that the first 3 decimals are identical.

The spelling of 2305806 in words is "two million, three hundred five thousand, eight hundred six".