297728 has 18 divisors (see below), whose sum is σ = 594804. Its totient is φ = 148736.

The previous prime is 297727. The next prime is 297757. The reversal of 297728 is 827792.

297728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 297728.

It is not an unprimeable number, because it can be changed into a prime (297727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326 + ... + 837.

2²⁹⁷⁷²⁸ is an apocalyptic number.

It is an amenable number.

297728 is a deficient number, since it is larger than the sum of its proper divisors (297076).

297728 is an equidigital number, since it uses as much as digits as its factorization.

297728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1165 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 297728 is about 545.6445729594. The cubic root of 297728 is about 66.7738719574.

The spelling of 297728 in words is "two hundred ninety-seven thousand, seven hundred twenty-eight".