728512 has 14 divisors (see below), whose sum is σ = 1445768. Its totient is φ = 364224.

The previous prime is 728489. The next prime is 728521. The reversal of 728512 is 215827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628 + ... + 5755.

2⁷²⁸⁵¹² is an apocalyptic number.

It is an amenable number.

728512 is a deficient number, since it is larger than the sum of its proper divisors (717256).

728512 is a wasteful number, since it uses less digits than its factorization.

728512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11395 (or 11385 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 728512 is about 853.5291442007. The cubic root of 728512 is about 89.9799132127.

The spelling of 728512 in words is "seven hundred twenty-eight thousand, five hundred twelve".