258318 has 24 divisors (see below), whose sum is σ = 569088. Its totient is φ = 84672.

The previous prime is 258317. The next prime is 258319. The reversal of 258318 is 813852.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (258317) and next prime (258319).

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 258291 and 258300.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258318.

It is not an unprimeable number, because it can be changed into a prime (258317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1971 + ... + 2097.

It is an arithmetic number, because the mean of its divisors is an integer number (23712).

2²⁵⁸³¹⁸ is an apocalyptic number.

258318 is an abundant number, since it is smaller than the sum of its proper divisors (310770).

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

258318 is a wasteful number, since it uses less digits than its factorization.

258318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 245 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 258318 is about 508.2499385145. The cubic root of 258318 is about 63.6871121468.

It can be divided in two parts, 2583 and 18, that added together give a square (2601 = 51²).

The spelling of 258318 in words is "two hundred fifty-eight thousand, three hundred eighteen".