728859 has 12 divisors (see below), whose sum is σ = 1027176. Its totient is φ = 459648.

The previous prime is 728851. The next prime is 728867. The reversal of 728859 is 958827.

728859 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (728851) and next prime (728867).

It is not a de Polignac number, because 728859 - 2³ = 728851 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

728859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (728851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (85598).

2⁷²⁸⁸⁵⁹ is an apocalyptic number.

728859 is a deficient number, since it is larger than the sum of its proper divisors (298317).

728859 is a wasteful number, since it uses less digits than its factorization.

728859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 695 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 728859 is about 853.7323936691. The cubic root of 728859 is about 89.9941971567.

The spelling of 728859 in words is "seven hundred twenty-eight thousand, eight hundred fifty-nine".