238563871 has 32 divisors (see below), whose sum is σ = 307980288. Its totient is φ = 179746560.

The previous prime is 238563859. The next prime is 238563887. The reversal of 238563871 is 178365832.

238563871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238563871 - 2⁹ = 238563359 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238563811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159690 + ... + 161176.

It is an arithmetic number, because the mean of its divisors is an integer number (9624384).

Almost surely, 2^238563871 is an apocalyptic number.

238563871 is a deficient number, since it is larger than the sum of its proper divisors (69416417).

238563871 is a wasteful number, since it uses less digits than its factorization.

238563871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its digits is 241920, while the sum is 43.

The square root of 238563871 is about 15445.5129730288. The cubic root of 238563871 is about 620.2044686348.

The spelling of 238563871 in words is "two hundred thirty-eight million, five hundred sixty-three thousand, eight hundred seventy-one".