2504440 has 64 divisors (see below), whose sum is σ = 6220800. Its totient is φ = 903168.

The previous prime is 2504431. The next prime is 2504441. The reversal of 2504440 is 444052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19657 + ... + 19783.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2^2504440 is an apocalyptic number.

2504440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2504440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3110400).

2504440 is an abundant number, since it is smaller than the sum of its proper divisors (3716360).

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

2504440 is a wasteful number, since it uses less digits than its factorization.

2504440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2504440 is about 1582.5422585195. The cubic root of 2504440 is about 135.8011800728.

Adding to 2504440 its reverse (444052), we get a palindrome (2948492).

The spelling of 2504440 in words is "two million, five hundred four thousand, four hundred forty".