238458 has 16 divisors (see below), whose sum is σ = 520416. Its totient is φ = 72240.

The previous prime is 238451. The next prime is 238463. The reversal of 238458 is 854832.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 238458.

It is not an unprimeable number, because it can be changed into a prime (238451) by changing a digit.

238458 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1741 + ... + 1872.

It is an arithmetic number, because the mean of its divisors is an integer number (32526).

2²³⁸⁴⁵⁸ is an apocalyptic number.

238458 is an abundant number, since it is smaller than the sum of its proper divisors (281958).

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

238458 is a wasteful number, since it uses less digits than its factorization.

238458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629.

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

The square root of 238458 is about 488.3216153315. The cubic root of 238458 is about 62.0112709305.

It can be divided in two parts, 2384 and 58, that added together give a palindrome (2442).

The spelling of 238458 in words is "two hundred thirty-eight thousand, four hundred fifty-eight".