510728 has 8 divisors (see below), whose sum is σ = 957630. Its totient is φ = 255360.

The previous prime is 510709. The next prime is 510751. The reversal of 510728 is 827015.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 103684 = 638^2 + 322^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31913 + ... + 31928.

2⁵¹⁰⁷²⁸ is an apocalyptic number.

It is an amenable number.

510728 is a deficient number, since it is larger than the sum of its proper divisors (446902).

510728 is a wasteful number, since it uses less digits than its factorization.

510728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63847 (or 63843 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 510728 is about 714.6523630409. The cubic root of 510728 is about 79.9336950609.

The spelling of 510728 in words is "five hundred ten thousand, seven hundred twenty-eight".