238831864 has 16 divisors (see below), whose sum is σ = 451230120. Its totient is φ = 118503840.

The previous prime is 238831841. The next prime is 238831867. The reversal of 238831864 is 468138832.

238831864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 238831864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238831867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112899 + ... + 114994.

Almost surely, 2^238831864 is an apocalyptic number.

It is an amenable number.

238831864 is a deficient number, since it is larger than the sum of its proper divisors (212398256).

238831864 is a wasteful number, since it uses less digits than its factorization.

238831864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228030 (or 228026 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 238831864 is about 15454.1859701506. The cubic root of 238831864 is about 620.4366192621.

The spelling of 238831864 in words is "two hundred thirty-eight million, eight hundred thirty-one thousand, eight hundred sixty-four".