258018 has 8 divisors (see below), whose sum is σ = 516048. Its totient is φ = 86004.

The previous prime is 257993. The next prime is 258019. The reversal of 258018 is 810852.

258018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

258018 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258018.

It is not an unprimeable number, because it can be changed into a prime (258019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21496 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (64506).

2²⁵⁸⁰¹⁸ is an apocalyptic number.

258018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

258018 is a wasteful number, since it uses less digits than its factorization.

258018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43008.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 258018 is about 507.9547223917. The cubic root of 258018 is about 63.6624480574.

The spelling of 258018 in words is "two hundred fifty-eight thousand, eighteen".