238485438 has 32 divisors (see below), whose sum is σ = 542898720. Its totient is φ = 77555520.

The previous prime is 238485431. The next prime is 238485451. The reversal of 238485438 is 834584832.

238485438 is a `hidden beast` number, since 23 + 84 + 8 + 543 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 238485393 and 238485402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238485431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51645 + ... + 56072.

It is an arithmetic number, because the mean of its divisors is an integer number (16965585).

Almost surely, 2^238485438 is an apocalyptic number.

238485438 is an abundant number, since it is smaller than the sum of its proper divisors (304413282).

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

238485438 is a wasteful number, since it uses less digits than its factorization.

238485438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107769 (or 107763 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 238485438 is about 15442.9737421262. The cubic root of 238485438 is about 620.1364926684.

The spelling of 238485438 in words is "two hundred thirty-eight million, four hundred eighty-five thousand, four hundred thirty-eight".