258258 has 64 divisors (see below), whose sum is σ = 709632. Its totient is φ = 60480.

The previous prime is 258253. The next prime is 258277. The reversal of 258258 is 852852.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258258.

It is not an unprimeable number, because it can be changed into a prime (258253) by changing a digit.

258258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5985 + ... + 6027.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2²⁵⁸²⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354816).

258258 is an abundant number, since it is smaller than the sum of its proper divisors (451374).

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

258258 is a wasteful number, since it uses less digits than its factorization.

258258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79.

The product of its digits is 6400, while the sum is 30.

The square root of 258258 is about 508.1909090096. The cubic root of 258258 is about 63.6821808572.

The spelling of 258258 in words is "two hundred fifty-eight thousand, two hundred fifty-eight".