238242686 has 8 divisors (see below), whose sum is σ = 389851704. Its totient is φ = 108292120.

The previous prime is 238242659. The next prime is 238242689. The reversal of 238242686 is 686242832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238242689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5414585 + ... + 5414628.

It is an arithmetic number, because the mean of its divisors is an integer number (48731463).

Almost surely, 2^238242686 is an apocalyptic number.

238242686 is a deficient number, since it is larger than the sum of its proper divisors (151609018).

238242686 is a wasteful number, since it uses less digits than its factorization.

238242686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10829226.

The product of its digits is 221184, while the sum is 41.

The square root of 238242686 is about 15435.1121149151. The cubic root of 238242686 is about 619.9260109418.

The spelling of 238242686 in words is "two hundred thirty-eight million, two hundred forty-two thousand, six hundred eighty-six".