728255 has 8 divisors (see below), whose sum is σ = 953424. Its totient is φ = 529600.

The previous prime is 728209. The next prime is 728261. The reversal of 728255 is 552827.

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

It is not a de Polignac number, because 728255 - 2⁶ = 728191 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728255.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6566 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (119178).

2⁷²⁸²⁵⁵ is an apocalyptic number.

728255 is a deficient number, since it is larger than the sum of its proper divisors (225169).

728255 is a wasteful number, since it uses less digits than its factorization.

728255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257.

The product of its digits is 5600, while the sum is 29.

The square root of 728255 is about 853.3785795296. The cubic root of 728255 is about 89.9693311141.

It can be divided in two parts, 7282 and 55, that added together give a palindrome (7337).

The spelling of 728255 in words is "seven hundred twenty-eight thousand, two hundred fifty-five".