726828 has 24 divisors (see below), whose sum is σ = 1742832. Its totient is φ = 235584.

The previous prime is 726811. The next prime is 726839. The reversal of 726828 is 828627.

726828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a nialpdrome in base 15.

It is an unprimeable number.

726828 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, 375 + ... + 1262.

It is an arithmetic number, because the mean of its divisors is an integer number (72618).

2⁷²⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

726828 is an abundant number, since it is smaller than the sum of its proper divisors (1016004).

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

726828 is a wasteful number, since it uses less digits than its factorization.

726828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1679 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 726828 is about 852.5420810728. The cubic root of 726828 is about 89.9105283671.

The spelling of 726828 in words is "seven hundred twenty-six thousand, eight hundred twenty-eight".