728598 has 16 divisors (see below), whose sum is σ = 1569456. Its totient is φ = 224160.

The previous prime is 728579. The next prime is 728627. The reversal of 728598 is 895827.

728598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

728598 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4593 + ... + 4748.

It is an arithmetic number, because the mean of its divisors is an integer number (98091).

2⁷²⁸⁵⁹⁸ is an apocalyptic number.

728598 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

728598 is an abundant number, since it is smaller than the sum of its proper divisors (840858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728598 is a wasteful number, since it uses less digits than its factorization.

728598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359.

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

The square root of 728598 is about 853.5795217787. The cubic root of 728598 is about 89.9834537483.

It can be divided in two parts, 728 and 598, that added together give a triangular number (1326 = T₅₁).

The spelling of 728598 in words is "seven hundred twenty-eight thousand, five hundred ninety-eight".