298305 has 24 divisors (see below), whose sum is σ = 591552. Its totient is φ = 136224.

The previous prime is 298303. The next prime is 298307. The reversal of 298305 is 503892.

298305 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (298303) and next prime (298307).

It is not a de Polignac number, because 298305 - 2¹ = 298303 is a prime.

It is an alternating number because its digits alternate between even and odd.

298305 is strictly pandigital in base 7.

It is a Curzon number.

298305 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (298303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (24648).

2²⁹⁸³⁰⁵ is an apocalyptic number.

It is an amenable number.

298305 is a deficient number, since it is larger than the sum of its proper divisors (293247).

298305 is a wasteful number, since it uses less digits than its factorization.

298305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 298305 is about 546.1730494999. The cubic root of 298305 is about 66.8169802770.

The spelling of 298305 in words is "two hundred ninety-eight thousand, three hundred five".