728275 has 6 divisors (see below), whose sum is σ = 903092. Its totient is φ = 582600.

The previous prime is 728269. The next prime is 728281. The reversal of 728275 is 572827.

It is an interprime number because it is at equal distance from previous prime (728269) and next prime (728281).

It is not a de Polignac number, because 728275 - 2³ = 728267 is a prime.

It is a Duffinian number.

It is an unprimeable 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 5 ways as a sum of consecutive naturals, for example, 14541 + ... + 14590.

2⁷²⁸²⁷⁵ is an apocalyptic number.

728275 is a deficient number, since it is larger than the sum of its proper divisors (174817).

728275 is a wasteful number, since it uses less digits than its factorization.

728275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29141 (or 29136 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 728275 is about 853.3902975778. The cubic root of 728275 is about 89.9701547130.

It can be divided in two parts, 7 and 28275, that added together give a palindrome (28282).

The spelling of 728275 in words is "seven hundred twenty-eight thousand, two hundred seventy-five".