728344 has 16 divisors (see below), whose sum is σ = 1375920. Its totient is φ = 361440.

The previous prime is 728333. The next prime is 728369. The reversal of 728344 is 443827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2⁷²⁸³⁴⁴ is an apocalyptic number.

It is an amenable number.

728344 is a deficient number, since it is larger than the sum of its proper divisors (647576).

728344 is a wasteful number, since it uses less digits than its factorization.

728344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 728344 is about 853.4307236091. The cubic root of 728344 is about 89.9729960136.

The spelling of 728344 in words is "seven hundred twenty-eight thousand, three hundred forty-four".