238787 has 4 divisors (see below), whose sum is σ = 241560. Its totient is φ = 236016.

The previous prime is 238781. The next prime is 238789. The reversal of 238787 is 787832.

It is a happy number.

238787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 238787 - 2⁶ = 238723 is a prime.

It is an Ulam number.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (60390).

2²³⁸⁷⁸⁷ is an apocalyptic number.

238787 is a deficient number, since it is larger than the sum of its proper divisors (2773).

238787 is an equidigital number, since it uses as much as digits as its factorization.

238787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772.

The product of its digits is 18816, while the sum is 35.

The square root of 238787 is about 488.6583673693. The cubic root of 238787 is about 62.0397767646.

The spelling of 238787 in words is "two hundred thirty-eight thousand, seven hundred eighty-seven".