728492 has 6 divisors (see below), whose sum is σ = 1274868. Its totient is φ = 364244.

The previous prime is 728489. The next prime is 728521. The reversal of 728492 is 294827.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728492.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 91058 + ... + 91065.

It is an arithmetic number, because the mean of its divisors is an integer number (212478).

2⁷²⁸⁴⁹² is an apocalyptic number.

It is an amenable number.

728492 is a deficient number, since it is larger than the sum of its proper divisors (546376).

728492 is a wasteful number, since it uses less digits than its factorization.

728492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182127 (or 182125 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 728492 is about 853.5174280587. The cubic root of 728492 is about 89.9790897924.

The spelling of 728492 in words is "seven hundred twenty-eight thousand, four hundred ninety-two".