238647 has 4 divisors (see below), whose sum is σ = 318200. Its totient is φ = 159096.

The previous prime is 238639. The next prime is 238649. The reversal of 238647 is 746832.

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

It is not a de Polignac number, because 238647 - 2³ = 238639 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238649) 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, 39772 + ... + 39777.

It is an arithmetic number, because the mean of its divisors is an integer number (79550).

2²³⁸⁶⁴⁷ is an apocalyptic number.

238647 is a deficient number, since it is larger than the sum of its proper divisors (79553).

238647 is an equidigital number, since it uses as much as digits as its factorization.

238647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79552.

The product of its digits is 8064, while the sum is 30.

The square root of 238647 is about 488.5150970032. The cubic root of 238647 is about 62.0276498248.

It can be divided in two parts, 23864 and 7, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 238647 in words is "two hundred thirty-eight thousand, six hundred forty-seven".