238724 has 12 divisors (see below), whose sum is σ = 429324. Its totient is φ = 116064.

The previous prime is 238723. The next prime is 238727. The reversal of 238724 is 427832.

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 53824 = 430^2 + 232^2 .

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 238693 and 238702.

It is not an unprimeable number, because it can be changed into a prime (238723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659 + ... + 954.

It is an arithmetic number, because the mean of its divisors is an integer number (35777).

2²³⁸⁷²⁴ is an apocalyptic number.

It is an amenable number.

238724 is a deficient number, since it is larger than the sum of its proper divisors (190600).

238724 is a wasteful number, since it uses less digits than its factorization.

238724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1652 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 238724 is about 488.5939009034. The cubic root of 238724 is about 62.0343202284.

The spelling of 238724 in words is "two hundred thirty-eight thousand, seven hundred twenty-four".