728244 has 48 divisors (see below), whose sum is σ = 2063040. Its totient is φ = 220320.

The previous prime is 728209. The next prime is 728261. The reversal of 728244 is 442827.

728244 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 (27).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

728244 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 15 ways as a sum of consecutive naturals, for example, 882 + ... + 1494.

It is an arithmetic number, because the mean of its divisors is an integer number (42980).

2⁷²⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031520).

728244 is an abundant number, since it is smaller than the sum of its proper divisors (1334796).

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

728244 is a wasteful number, since it uses less digits than its factorization.

728244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 629 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 728244 is about 853.3721345345. The cubic root of 728244 is about 89.9688781282.

The spelling of 728244 in words is "seven hundred twenty-eight thousand, two hundred forty-four".