728085 has 8 divisors (see below), whose sum is σ = 1164960. Its totient is φ = 388304.

The previous prime is 728069. The next prime is 728087. The reversal of 728085 is 580827.

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

It is a cyclic number.

It is not a de Polignac number, because 728085 - 2⁴ = 728069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24255 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (145620).

2⁷²⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

728085 is a deficient number, since it is larger than the sum of its proper divisors (436875).

728085 is a wasteful number, since it uses less digits than its factorization.

728085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48547.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 728085 is about 853.2789696225. The cubic root of 728085 is about 89.9623299142.

The spelling of 728085 in words is "seven hundred twenty-eight thousand, eighty-five".