711728 has 10 divisors (see below), whose sum is σ = 1379004. Its totient is φ = 355856.

The previous prime is 711727. The next prime is 711731. The reversal of 711728 is 827117.

It is a junction number, because it is equal to n+sod(n) for n = 711697 and 711706.

It is not an unprimeable number, because it can be changed into a prime (711727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22226 + ... + 22257.

2⁷¹¹⁷²⁸ is an apocalyptic number.

It is an amenable number.

711728 is a deficient number, since it is larger than the sum of its proper divisors (667276).

711728 is a wasteful number, since it uses less digits than its factorization.

711728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44491 (or 44485 counting only the distinct ones).

The product of its digits is 784, while the sum is 26.

The square root of 711728 is about 843.6397335356. The cubic root of 711728 is about 89.2835295770.

The spelling of 711728 in words is "seven hundred eleven thousand, seven hundred twenty-eight".