2489728 has 32 divisors (see below), whose sum is σ = 5067360. Its totient is φ = 1218048.

The previous prime is 2489719. The next prime is 2489749. The reversal of 2489728 is 8279842.

2489728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6601 + ... + 6967.

It is an arithmetic number, because the mean of its divisors is an integer number (158355).

2^2489728 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 2489728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2533680).

2489728 is an abundant number, since it is smaller than the sum of its proper divisors (2577632).

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

2489728 is an equidigital number, since it uses as much as digits as its factorization.

2489728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 422 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 2489728 is about 1577.8871949541. The cubic root of 2489728 is about 135.5347423428.

The spelling of 2489728 in words is "two million, four hundred eighty-nine thousand, seven hundred twenty-eight".