2043564 has 24 divisors (see below), whose sum is σ = 5019840. Its totient is φ = 645264.

The previous prime is 2043541. The next prime is 2043571. The reversal of 2043564 is 4653402.

2043564 = T₈₂ + T₈₃ + ... + T₂₃₃.

2043564 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4254 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (209160).

2^2043564 is an apocalyptic number.

It is an amenable number.

2043564 is an abundant number, since it is smaller than the sum of its proper divisors (2976276).

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

2043564 is a wasteful number, since it uses less digits than its factorization.

2043564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989 (or 8987 counting only the distinct ones).

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

The square root of 2043564 is about 1429.5327908096. The cubic root of 2043564 is about 126.9003289316.

Adding to 2043564 its reverse (4653402), we get a palindrome (6696966).

The spelling of 2043564 in words is "two million, forty-three thousand, five hundred sixty-four".