297128 has 16 divisors (see below), whose sum is σ = 600180. Its totient is φ = 137088.

The previous prime is 297113. The next prime is 297133. The reversal of 297128 is 821792.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 293764 + 3364 = 542^2 + 58^2 .

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 297128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325 + ... + 1532.

2²⁹⁷¹²⁸ is an apocalyptic number.

It is an amenable number.

297128 is an abundant number, since it is smaller than the sum of its proper divisors (303052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

297128 is a wasteful number, since it uses less digits than its factorization.

297128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876 (or 2872 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 297128 is about 545.0944872222. The cubic root of 297128 is about 66.7289861705.

The spelling of 297128 in words is "two hundred ninety-seven thousand, one hundred twenty-eight".