728265 has 16 divisors (see below), whose sum is σ = 1191168. Its totient is φ = 379776.

The previous prime is 728261. The next prime is 728267. The reversal of 728265 is 562827.

728265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728265 - 2² = 728261 is a prime.

728265 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728265.

It is not an unprimeable number, because it can be changed into a prime (728261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (74448).

2⁷²⁸²⁶⁵ is an apocalyptic number.

It is an amenable number.

728265 is a deficient number, since it is larger than the sum of its proper divisors (462903).

728265 is a wasteful number, since it uses less digits than its factorization.

728265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088.

The product of its digits is 6720, while the sum is 30.

The square root of 728265 is about 853.3844385738. The cubic root of 728265 is about 89.9697429154.

The spelling of 728265 in words is "seven hundred twenty-eight thousand, two hundred sixty-five".