2722688 has 32 divisors (see below), whose sum is σ = 5508000. Its totient is φ = 1340416.

The previous prime is 2722661. The next prime is 2722691. The reversal of 2722688 is 8862272.

It is a tau number, because it is divible by the number of its divisors (32).

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, 11273 + ... + 11511.

It is an arithmetic number, because the mean of its divisors is an integer number (172125).

2^2722688 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 2722688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754000).

2722688 is an abundant number, since it is smaller than the sum of its proper divisors (2785312).

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

2722688 is an equidigital number, since it uses as much as digits as its factorization.

2722688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 330 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 2722688 is about 1650.0569687135. The cubic root of 2722688 is about 139.6366085986.

The spelling of 2722688 in words is "two million, seven hundred twenty-two thousand, six hundred eighty-eight".