238638824 has 32 divisors (see below), whose sum is σ = 453512520. Its totient is φ = 117712896.

The previous prime is 238638817. The next prime is 238638889. The reversal of 238638824 is 428836832.

It can be written as a sum of positive squares in 4 ways, for example, as 83137924 + 155500900 = 9118^2 + 12470^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249932 + ... + 250884.

Almost surely, 2^238638824 is an apocalyptic number.

It is an amenable number.

238638824 is a deficient number, since it is larger than the sum of its proper divisors (214873696).

238638824 is a wasteful number, since it uses less digits than its factorization.

238638824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1345 counting only the distinct ones).

The product of its digits is 442368, while the sum is 44.

The square root of 238638824 is about 15447.9391505793. The cubic root of 238638824 is about 620.2694146494.

The spelling of 238638824 in words is "two hundred thirty-eight million, six hundred thirty-eight thousand, eight hundred twenty-four".