238632381 has 24 divisors (see below), whose sum is σ = 390746720. Its totient is φ = 139120416.

The previous prime is 238632323. The next prime is 238632431. The reversal of 238632381 is 183236832.

It is not a de Polignac number, because 238632381 - 2¹⁷ = 238501309 is a prime.

It is a super-2 number, since 2×238632381² = 113890826523458322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238632311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51451 + ... + 55896.

Almost surely, 2^238632381 is an apocalyptic number.

It is an amenable number.

238632381 is a deficient number, since it is larger than the sum of its proper divisors (152114339).

238632381 is a wasteful number, since it uses less digits than its factorization.

238632381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107385 (or 107382 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 238632381 is about 15447.7306100281. The cubic root of 238632381 is about 620.2638323896.

It can be divided in two parts, 23863 and 2381, that added together give a square (26244 = 162²).

The spelling of 238632381 in words is "two hundred thirty-eight million, six hundred thirty-two thousand, three hundred eighty-one".