728176 has 20 divisors (see below), whose sum is σ = 1432944. Its totient is φ = 358400.

The previous prime is 728173. The next prime is 728191. The reversal of 728176 is 671827.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816 + ... + 1456.

2⁷²⁸¹⁷⁶ is an apocalyptic number.

It is an amenable number.

728176 is a deficient number, since it is larger than the sum of its proper divisors (704768).

728176 is a wasteful number, since it uses less digits than its factorization.

728176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 714 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 728176 is about 853.3322916660. The cubic root of 728176 is about 89.9660777508.

The spelling of 728176 in words is "seven hundred twenty-eight thousand, one hundred seventy-six".