2564728 has 8 divisors (see below), whose sum is σ = 4808880. Its totient is φ = 1282360.

The previous prime is 2564719. The next prime is 2564741. The reversal of 2564728 is 8274652.

2564728 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 (8).

It is a junction number, because it is equal to n+sod(n) for n = 2564693 and 2564702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160288 + ... + 160303.

It is an arithmetic number, because the mean of its divisors is an integer number (601110).

2^2564728 is an apocalyptic number.

It is an amenable number.

2564728 is a deficient number, since it is larger than the sum of its proper divisors (2244152).

2564728 is a wasteful number, since it uses less digits than its factorization.

2564728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320597 (or 320593 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 2564728 is about 1601.4768184398. The cubic root of 2564728 is about 136.8822402570.

The spelling of 2564728 in words is "two million, five hundred sixty-four thousand, seven hundred twenty-eight".