238505 has 4 divisors (see below), whose sum is σ = 286212. Its totient is φ = 190800.

The previous prime is 238499. The next prime is 238519. The reversal of 238505 is 505832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 143641 = 308^2 + 379^2 .

It is not a de Polignac number, because 238505 - 2¹⁶ = 172969 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23846 + ... + 23855.

It is an arithmetic number, because the mean of its divisors is an integer number (71553).

2²³⁸⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

238505 is a deficient number, since it is larger than the sum of its proper divisors (47707).

238505 is an equidigital number, since it uses as much as digits as its factorization.

238505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47706.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 238505 is about 488.3697369821. The cubic root of 238505 is about 62.0153447971.

The spelling of 238505 in words is "two hundred thirty-eight thousand, five hundred five".