724828 has 24 divisors (see below), whose sum is σ = 1397088. Its totient is φ = 326976.

The previous prime is 724813. The next prime is 724837. The reversal of 724828 is 828427.

It is a self number, because there is not a number n which added to its sum of digits gives 724828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2625 + ... + 2887.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2⁷²⁴⁸²⁸ is an apocalyptic number.

It is an amenable number.

724828 is a deficient number, since it is larger than the sum of its proper divisors (672260).

724828 is a wasteful number, since it uses less digits than its factorization.

724828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 331 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 724828 is about 851.3683104274. The cubic root of 724828 is about 89.8279841951.

It can be divided in two parts, 72 and 4828, that added together give a square (4900 = 70²).

The spelling of 724828 in words is "seven hundred twenty-four thousand, eight hundred twenty-eight".