728965 has 8 divisors (see below), whose sum is σ = 903168. Its totient is φ = 564240.

The previous prime is 728953. The next prime is 728969. The reversal of 728965 is 569827.

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

It is not a de Polignac number, because 728965 - 2⁷ = 728837 is a prime.

It is a Duffinian 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.

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 7 ways as a sum of consecutive naturals, for example, 2197 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (112896).

2⁷²⁸⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

728965 is a deficient number, since it is larger than the sum of its proper divisors (174203).

728965 is a wasteful number, since it uses less digits than its factorization.

728965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739.

The product of its digits is 30240, while the sum is 37.

The square root of 728965 is about 853.7944717554. The cubic root of 728965 is about 89.9985596477.

The spelling of 728965 in words is "seven hundred twenty-eight thousand, nine hundred sixty-five".