2389728 has 96 divisors (see below), whose sum is σ = 7160832. Its totient is φ = 691200.

The previous prime is 2389721. The next prime is 2389729. The reversal of 2389728 is 8279832.

2389728 is digitally balanced in base 5, 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 (96).

Its product of digits (48384) is a multiple of the sum of its prime factors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389721) 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, 32700 + ... + 32772.

It is an arithmetic number, because the mean of its divisors is an integer number (74592).

2^2389728 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 2389728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3580416).

2389728 is an abundant number, since it is smaller than the sum of its proper divisors (4771104).

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

2389728 is a wasteful number, since it uses less digits than its factorization.

2389728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 120 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 2389728 is about 1545.8745097840. The cubic root of 2389728 is about 133.6953053217.

The spelling of 2389728 in words is "two million, three hundred eighty-nine thousand, seven hundred twenty-eight".