2528728 has 16 divisors (see below), whose sum is σ = 4870080. Its totient is φ = 1230048.

The previous prime is 2528717. The next prime is 2528777. The reversal of 2528728 is 8278252.

2528728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2528693 and 2528702.

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, 3976 + ... + 4567.

It is an arithmetic number, because the mean of its divisors is an integer number (304380).

2^2528728 is an apocalyptic number.

It is an amenable number.

2528728 is a deficient number, since it is larger than the sum of its proper divisors (2341352).

2528728 is a wasteful number, since it uses less digits than its factorization.

2528728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586 (or 8582 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 2528728 is about 1590.1974720141. The cubic root of 2528728 is about 136.2387674156.

The spelling of 2528728 in words is "two million, five hundred twenty-eight thousand, seven hundred twenty-eight".