238686 has 16 divisors (see below), whose sum is σ = 545664. Its totient is φ = 68184.

The previous prime is 238681. The next prime is 238691. The reversal of 238686 is 686832.

It is an interprime number because it is at equal distance from previous prime (238681) and next prime (238691).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800 + ... + 2883.

It is an arithmetic number, because the mean of its divisors is an integer number (34104).

2²³⁸⁶⁸⁶ is an apocalyptic number.

238686 is an abundant number, since it is smaller than the sum of its proper divisors (306978).

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

238686 is a wasteful number, since it uses less digits than its factorization.

238686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695.

The product of its digits is 13824, while the sum is 33.

The square root of 238686 is about 488.5550122555. Note that the first 3 decimals coincide. The cubic root of 238686 is about 62.0310285202.

The spelling of 238686 in words is "two hundred thirty-eight thousand, six hundred eighty-six".