238623538 has 4 divisors (see below), whose sum is σ = 357935310. Its totient is φ = 119311768.

The previous prime is 238623533. The next prime is 238623557. The reversal of 238623538 is 835326832.

238623538 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 can be written as a sum of positive squares in only one way, i.e., 236021769 + 2601769 = 15363^2 + 1613^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 238623538.

It is not an unprimeable number, because it can be changed into a prime (238623533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59655883 + ... + 59655886.

Almost surely, 2^238623538 is an apocalyptic number.

238623538 is a deficient number, since it is larger than the sum of its proper divisors (119311772).

238623538 is a wasteful number, since it uses less digits than its factorization.

238623538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119311771.

The product of its digits is 207360, while the sum is 40.

The square root of 238623538 is about 15447.4443841044. Note that the first 3 decimals coincide. The cubic root of 238623538 is about 620.2561705894.

The spelling of 238623538 in words is "two hundred thirty-eight million, six hundred twenty-three thousand, five hundred thirty-eight".