728270 has 16 divisors (see below), whose sum is σ = 1380240. Its totient is φ = 275904.

The previous prime is 728269. The next prime is 728281. The reversal of 728270 is 72827.

It is a Curzon number.

It is a zygodrome in base 3.

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 728270.

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 7 ways as a sum of consecutive naturals, for example, 1727 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (86265).

2⁷²⁸²⁷⁰ is an apocalyptic number.

728270 is a deficient number, since it is larger than the sum of its proper divisors (651970).

728270 is a wasteful number, since it uses less digits than its factorization.

728270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 728270 is about 853.3873680809. The cubic root of 728270 is about 89.9699488147.

The spelling of 728270 in words is "seven hundred twenty-eight thousand, two hundred seventy".