238531864 has 16 divisors (see below), whose sum is σ = 448315920. Its totient is φ = 118980960.

The previous prime is 238531823. The next prime is 238531877. The reversal of 238531864 is 468135832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32044 + ... + 38779.

It is an arithmetic number, because the mean of its divisors is an integer number (28019745).

Almost surely, 2^238531864 is an apocalyptic number.

It is an amenable number.

238531864 is a deficient number, since it is larger than the sum of its proper divisors (209784056).

238531864 is a wasteful number, since it uses less digits than its factorization.

238531864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71250 (or 71246 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 238531864 is about 15444.4768121164. The cubic root of 238531864 is about 620.1767307490.

The spelling of 238531864 in words is "two hundred thirty-eight million, five hundred thirty-one thousand, eight hundred sixty-four".