728012 has 12 divisors (see below), whose sum is σ = 1308720. Its totient is φ = 354096.

The previous prime is 728003. The next prime is 728017. The reversal of 728012 is 210827.

It is not an unprimeable number, because it can be changed into a prime (728017) by changing a digit.

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, 2312 + ... + 2607.

It is an arithmetic number, because the mean of its divisors is an integer number (109060).

2⁷²⁸⁰¹² is an apocalyptic number.

It is an amenable number.

728012 is a deficient number, since it is larger than the sum of its proper divisors (580708).

728012 is a wasteful number, since it uses less digits than its factorization.

728012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960 (or 4958 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 728012 is about 853.2361923875. The cubic root of 728012 is about 89.9593231821.

Adding to 728012 its reverse (210827), we get a palindrome (938839).

The spelling of 728012 in words is "seven hundred twenty-eight thousand, twelve".