564728 has 16 divisors (see below), whose sum is σ = 1074480. Its totient is φ = 278208.

The previous prime is 564713. The next prime is 564761. The reversal of 564728 is 827465.

It is a junction number, because it is equal to n+sod(n) for n = 564694 and 564703.

It is a congruent number.

It is an unprimeable number.

564728 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 101 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (67155).

2⁵⁶⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

564728 is a deficient number, since it is larger than the sum of its proper divisors (509752).

564728 is a wasteful number, since it uses less digits than its factorization.

564728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1042 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 564728 is about 751.4838654289. The cubic root of 564728 is about 82.6570256996.

The spelling of 564728 in words is "five hundred sixty-four thousand, seven hundred twenty-eight".