2305656 has 48 divisors (see below), whose sum is σ = 6452160. Its totient is φ = 743040.

The previous prime is 2305651. The next prime is 2305691. The reversal of 2305656 is 6565032.

2305656 is a `hidden beast` number, since 2 + 3 + 0 + 5 + 656 = 666.

2305656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2305651) 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 in 11 ways as a sum of consecutive naturals, for example, 1716 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (134420).

2^2305656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2305656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3226080).

2305656 is an abundant number, since it is smaller than the sum of its proper divisors (4146504).

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

2305656 is a wasteful number, since it uses less digits than its factorization.

2305656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2305656 is about 1518.4386717942. The cubic root of 2305656 is about 132.1087258470.

It can be divided in two parts, 230 and 5656, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 2305656 in words is "two million, three hundred five thousand, six hundred fifty-six".