2564436 has 24 divisors (see below), whose sum is σ = 6838720. Its totient is φ = 732672.

The previous prime is 2564423. The next prime is 2564447. The reversal of 2564436 is 6344652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15181 + ... + 15348.

2^2564436 is an apocalyptic number.

It is an amenable number.

2564436 is an abundant number, since it is smaller than the sum of its proper divisors (4274284).

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

2564436 is a wasteful number, since it uses less digits than its factorization.

2564436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30543 (or 30541 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 2564436 is about 1601.3856499919. The cubic root of 2564436 is about 136.8770452771.

The spelling of 2564436 in words is "two million, five hundred sixty-four thousand, four hundred thirty-six".