2305644 has 24 divisors (see below), whose sum is σ = 5869248. Its totient is φ = 698640.

The previous prime is 2305643. The next prime is 2305649. The reversal of 2305644 is 4465032.

2305644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2305643) 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 7 ways as a sum of consecutive naturals, for example, 8602 + ... + 8865.

It is an arithmetic number, because the mean of its divisors is an integer number (244552).

2^2305644 is an apocalyptic number.

It is an amenable number.

2305644 is an abundant number, since it is smaller than the sum of its proper divisors (3563604).

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

2305644 is a wasteful number, since it uses less digits than its factorization.

2305644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17485 (or 17483 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2305644 is about 1518.4347203617. The cubic root of 2305644 is about 132.1084966559.

The spelling of 2305644 in words is "two million, three hundred five thousand, six hundred forty-four".