716728 has 8 divisors (see below), whose sum is σ = 1343880. Its totient is φ = 358360.

The previous prime is 716713. The next prime is 716731. The reversal of 716728 is 827617.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 716728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44788 + ... + 44803.

It is an arithmetic number, because the mean of its divisors is an integer number (167985).

2⁷¹⁶⁷²⁸ is an apocalyptic number.

It is an amenable number.

716728 is a deficient number, since it is larger than the sum of its proper divisors (627152).

716728 is a wasteful number, since it uses less digits than its factorization.

716728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89597 (or 89593 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 716728 is about 846.5978974696. The cubic root of 716728 is about 89.4921187779.

Subtracting 716728 from its reverse (827617), we obtain a square (110889 = 333²).

It can be divided in two parts, 716 and 728, that added together give a square (1444 = 38²).

The spelling of 716728 in words is "seven hundred sixteen thousand, seven hundred twenty-eight".