578728 has 8 divisors (see below), whose sum is σ = 1085130. Its totient is φ = 289360.

The previous prime is 578719. The next prime is 578729. The reversal of 578728 is 827875.

It can be written as a sum of positive squares in only one way, i.e., 386884 + 191844 = 622^2 + 438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×578728³ = 581493332502253056, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (578729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36163 + ... + 36178.

2⁵⁷⁸⁷²⁸ is an apocalyptic number.

It is an amenable number.

578728 is a deficient number, since it is larger than the sum of its proper divisors (506402).

578728 is a wasteful number, since it uses less digits than its factorization.

578728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72347 (or 72343 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 578728 is about 760.7417433006. The cubic root of 578728 is about 83.3344995392.

The spelling of 578728 in words is "five hundred seventy-eight thousand, seven hundred twenty-eight".