297988 has 24 divisors (see below), whose sum is σ = 564480. Its totient is φ = 137280.

The previous prime is 297971. The next prime is 297989. The reversal of 297988 is 889792.

297988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297989) by changing a digit.

297988 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 (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733 + ... + 3811.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2²⁹⁷⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

297988 is a deficient number, since it is larger than the sum of its proper divisors (266492).

297988 is a wasteful number, since it uses less digits than its factorization.

297988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 145 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 297988 is about 545.8827712980. The cubic root of 297988 is about 66.7933037379.

The spelling of 297988 in words is "two hundred ninety-seven thousand, nine hundred eighty-eight".