2722624 has 28 divisors (see below), whose sum is σ = 5689600. Its totient is φ = 1289088.

The previous prime is 2722619. The next prime is 2722639. The reversal of 2722624 is 4262272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (203200).

2^2722624 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 2722624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844800).

2722624 is an abundant number, since it is smaller than the sum of its proper divisors (2966976).

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

2722624 is a wasteful number, since it uses less digits than its factorization.

2722624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270 (or 2260 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 2722624 is about 1650.0375753297. The cubic root of 2722624 is about 139.6355144822.

Adding to 2722624 its reverse (4262272), we get a palindrome (6984896).

The spelling of 2722624 in words is "two million, seven hundred twenty-two thousand, six hundred twenty-four".