2503864 has 32 divisors (see below), whose sum is σ = 5266800. Its totient is φ = 1105920.

The previous prime is 2503859. The next prime is 2503871. The reversal of 2503864 is 4683052.

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, 2872 + ... + 3640.

2^2503864 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 2503864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633400).

2503864 is an abundant number, since it is smaller than the sum of its proper divisors (2762936).

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

2503864 is a wasteful number, since it uses less digits than its factorization.

2503864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2503864 is about 1582.3602623929. The cubic root of 2503864 is about 135.7907682339.

It can be divided in two parts, 250 and 3864, that added together give a palindrome (4114).

The spelling of 2503864 in words is "two million, five hundred three thousand, eight hundred sixty-four".