728975 has 12 divisors (see below), whose sum is σ = 973896. Its totient is φ = 538080.

The previous prime is 728971. The next prime is 728993. The reversal of 728975 is 579827.

It is not a de Polignac number, because 728975 - 2² = 728971 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 (728971) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 797 + ... + 1446.

It is an arithmetic number, because the mean of its divisors is an integer number (81158).

2⁷²⁸⁹⁷⁵ is an apocalyptic number.

728975 is a deficient number, since it is larger than the sum of its proper divisors (244921).

728975 is a wasteful number, since it uses less digits than its factorization.

728975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2261 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 728975 is about 853.8003279456. The cubic root of 728975 is about 89.9989711817.

It can be divided in two parts, 7 and 28975, that added together give a palindrome (28982).

The spelling of 728975 in words is "seven hundred twenty-eight thousand, nine hundred seventy-five".