238664286 has 32 divisors (see below), whose sum is σ = 606132480. Its totient is φ = 68189688.

The previous prime is 238664273. The next prime is 238664291. The reversal of 238664286 is 682466832.

238664286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315316 + ... + 316071.

It is an arithmetic number, because the mean of its divisors is an integer number (18941640).

Almost surely, 2^238664286 is an apocalyptic number.

238664286 is an abundant number, since it is smaller than the sum of its proper divisors (367468194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238664286 is a wasteful number, since it uses less digits than its factorization.

238664286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631405 (or 631399 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 238664286 is about 15448.7632514710. The cubic root of 238664286 is about 620.2914741198.

The spelling of 238664286 in words is "two hundred thirty-eight million, six hundred sixty-four thousand, two hundred eighty-six".