728966 has 8 divisors (see below), whose sum is σ = 1249680. Its totient is φ = 312408.

The previous prime is 728953. The next prime is 728969. The reversal of 728966 is 669827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728969) by changing a digit.

728966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 26021 + ... + 26048.

It is an arithmetic number, because the mean of its divisors is an integer number (156210).

2⁷²⁸⁹⁶⁶ is an apocalyptic number.

728966 is a deficient number, since it is larger than the sum of its proper divisors (520714).

728966 is a wasteful number, since it uses less digits than its factorization.

728966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52078.

The product of its digits is 36288, while the sum is 38.

The square root of 728966 is about 853.7950573762. The cubic root of 728966 is about 89.9986008013.

The spelling of 728966 in words is "seven hundred twenty-eight thousand, nine hundred sixty-six".