238566 has 8 divisors (see below), whose sum is σ = 477144. Its totient is φ = 79520.

The previous prime is 238547. The next prime is 238573. The reversal of 238566 is 665832.

238566 is nontrivially palindromic in base 14.

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

238566 is an admirable number.

It is a d-powerful number, because it can be written as 2¹⁷ + 3¹⁰ + 5³ + 8⁵ + 6⁵ + 6⁵ .

It is a congruent number.

It is an unprimeable number.

238566 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 3 ways as a sum of consecutive naturals, for example, 19875 + ... + 19886.

It is an arithmetic number, because the mean of its divisors is an integer number (59643).

2²³⁸⁵⁶⁶ is an apocalyptic number.

238566 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.

238566 is a wasteful number, since it uses less digits than its factorization.

238566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39766.

The product of its digits is 8640, while the sum is 30.

The square root of 238566 is about 488.4321856717. The cubic root of 238566 is about 62.0206313579.

The spelling of 238566 in words is "two hundred thirty-eight thousand, five hundred sixty-six".