728030 has 16 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 284832.

The previous prime is 728027. The next prime is 728047. The reversal of 728030 is 30827.

It is a junction number, because it is equal to n+sod(n) for n = 727993 and 728011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2⁷²⁸⁰³⁰ is an apocalyptic number.

728030 is a deficient number, since it is larger than the sum of its proper divisors (611170).

728030 is a wasteful number, since it uses less digits than its factorization.

728030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 728030 is about 853.2467403981. The cubic root of 728030 is about 89.9600645867.

Adding to 728030 its reverse (30827), we get a palindrome (758857).

The spelling of 728030 in words is "seven hundred twenty-eight thousand, thirty".