438258 has 8 divisors (see below), whose sum is σ = 876528. Its totient is φ = 146084.

The previous prime is 438253. The next prime is 438259. The reversal of 438258 is 852834.

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

438258 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 438258.

It is not an unprimeable number, because it can be changed into a prime (438253) 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, 36516 + ... + 36527.

It is an arithmetic number, because the mean of its divisors is an integer number (109566).

2⁴³⁸²⁵⁸ is an apocalyptic number.

438258 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.

438258 is a wasteful number, since it uses less digits than its factorization.

438258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73048.

The product of its digits is 7680, while the sum is 30.

The square root of 438258 is about 662.0105739337. The cubic root of 438258 is about 75.9585415619.

It can be divided in two parts, 438 and 258, that added together give a palindrome (696).

The spelling of 438258 in words is "four hundred thirty-eight thousand, two hundred fifty-eight".