728692 has 12 divisors (see below), whose sum is σ = 1294720. Its totient is φ = 358776.

The previous prime is 728687. The next prime is 728699. The reversal of 728692 is 296827.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728699) by changing a digit.

728692 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 1092 + ... + 1627.

2⁷²⁸⁶⁹² is an apocalyptic number.

It is an amenable number.

728692 is a deficient number, since it is larger than the sum of its proper divisors (566028).

728692 is a wasteful number, since it uses less digits than its factorization.

728692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2788 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 728692 is about 853.6345822423. The cubic root of 728692 is about 89.9873233174.

The spelling of 728692 in words is "seven hundred twenty-eight thousand, six hundred ninety-two".