2889728 has 48 divisors (see below), whose sum is σ = 6191640. Its totient is φ = 1343488.

The previous prime is 2889707. The next prime is 2889739. The reversal of 2889728 is 8279882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34775 + ... + 34857.

2^2889728 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 2889728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3095820).

2889728 is an abundant number, since it is smaller than the sum of its proper divisors (3301912).

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

2889728 is an equidigital number, since it uses as much as digits as its factorization.

2889728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 102 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 2889728 is about 1699.9199981176. The cubic root of 2889728 is about 142.4357440885.

The spelling of 2889728 in words is "two million, eight hundred eighty-nine thousand, seven hundred twenty-eight".