2305406 has 8 divisors (see below), whose sum is σ = 3473184. Its totient is φ = 1147680.

The previous prime is 2305393. The next prime is 2305409. The reversal of 2305406 is 6045032.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910 + ... + 2873.

It is an arithmetic number, because the mean of its divisors is an integer number (434148).

2^2305406 is an apocalyptic number.

2305406 is a deficient number, since it is larger than the sum of its proper divisors (1167778).

2305406 is a wasteful number, since it uses less digits than its factorization.

2305406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2305406 is about 1518.3563481607. The cubic root of 2305406 is about 132.1039508683.

The spelling of 2305406 in words is "two million, three hundred five thousand, four hundred six".