238147 has 8 divisors (see below), whose sum is σ = 293216. Its totient is φ = 188352.

The previous prime is 238141. The next prime is 238151. The reversal of 238147 is 741832.

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

It is a cyclic number.

It is not a de Polignac number, because 238147 - 2⁷ = 238019 is a prime.

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

238147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (238141) 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, 1218 + ... + 1399.

It is an arithmetic number, because the mean of its divisors is an integer number (36652).

238147 is a Friedman number, since it can be written as (481+7)^2+3, using all its digits and the basic arithmetic operations.

2²³⁸¹⁴⁷ is an apocalyptic number.

238147 is a deficient number, since it is larger than the sum of its proper divisors (55069).

238147 is a wasteful number, since it uses less digits than its factorization.

238147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637.

The product of its digits is 1344, while the sum is 25.

The square root of 238147 is about 488.0030737608. The cubic root of 238147 is about 61.9843005689.

Adding to 238147 its reverse (741832), we get a palindrome (979979).

The spelling of 238147 in words is "two hundred thirty-eight thousand, one hundred forty-seven".