728875 has 32 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 470400.

The previous prime is 728873. The next prime is 728881. The reversal of 728875 is 578827.

It is not a de Polignac number, because 728875 - 2¹ = 728873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42867 + ... + 42883.

It is an arithmetic number, because the mean of its divisors is an integer number (35100).

2⁷²⁸⁸⁷⁵ is an apocalyptic number.

728875 is a deficient number, since it is larger than the sum of its proper divisors (394325).

728875 is an equidigital number, since it uses as much as digits as its factorization.

728875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 29 counting only the distinct ones).

The product of its digits is 31360, while the sum is 37.

The square root of 728875 is about 853.7417642355. The cubic root of 728875 is about 89.9948556730.

It can be divided in two parts, 7 and 28875, that added together give a palindrome (28882).

The spelling of 728875 in words is "seven hundred twenty-eight thousand, eight hundred seventy-five".