128297 has 8 divisors (see below), whose sum is σ = 141120. Its totient is φ = 115920.

The previous prime is 128291. The next prime is 128311. The reversal of 128297 is 792821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128297 - 2¹⁴ = 111913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2¹²⁸²⁹⁷ is an apocalyptic number.

It is an amenable number.

128297 is a deficient number, since it is larger than the sum of its proper divisors (12823).

128297 is a wasteful number, since it uses less digits than its factorization.

128297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223.

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

The square root of 128297 is about 358.1857060241. The cubic root of 128297 is about 50.4357906944.

The spelling of 128297 in words is "one hundred twenty-eight thousand, two hundred ninety-seven".