298218255 has 24 divisors (see below), whose sum is σ = 482347152. Its totient is φ = 157335552.

The previous prime is 298218251. The next prime is 298218259. The reversal of 298218255 is 552812892.

It is an interprime number because it is at equal distance from previous prime (298218251) and next prime (298218259).

It is not a de Polignac number, because 298218255 - 2² = 298218251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298218251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140079 + ... + 142191.

It is an arithmetic number, because the mean of its divisors is an integer number (20097798).

Almost surely, 2^298218255 is an apocalyptic number.

298218255 is a deficient number, since it is larger than the sum of its proper divisors (184128897).

298218255 is an equidigital number, since it uses as much as digits as its factorization.

298218255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315 (or 2218 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 298218255 is about 17268.9969309164. The cubic root of 298218255 is about 668.1050301284.

The spelling of 298218255 in words is "two hundred ninety-eight million, two hundred eighteen thousand, two hundred fifty-five".