2308728 has 64 divisors (see below), whose sum is σ = 6249600. Its totient is φ = 708480.

The previous prime is 2308727. The next prime is 2308741. The reversal of 2308728 is 8278032.

2308728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2308695 and 2308704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2308721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27775 + ... + 27857.

It is an arithmetic number, because the mean of its divisors is an integer number (97650).

2^2308728 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 2308728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3124800).

2308728 is an abundant number, since it is smaller than the sum of its proper divisors (3940872).

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

2308728 is a wasteful number, since it uses less digits than its factorization.

2308728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2308728 is about 1519.4499004574. The cubic root of 2308728 is about 132.1673726264.

The spelling of 2308728 in words is "two million, three hundred eight thousand, seven hundred twenty-eight".