238817992 has 64 divisors (see below), whose sum is σ = 541008000. Its totient is φ = 96546816.

The previous prime is 238817911. The next prime is 238818031. The reversal of 238817992 is 299718832.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413608 + ... + 414184.

It is an arithmetic number, because the mean of its divisors is an integer number (8453250).

Almost surely, 2^238817992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238817992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270504000).

238817992 is an abundant number, since it is smaller than the sum of its proper divisors (302190008).

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

238817992 is a wasteful number, since it uses less digits than its factorization.

238817992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 994 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 238817992 is about 15453.7371531937. The cubic root of 238817992 is about 620.4246068178.

The spelling of 238817992 in words is "two hundred thirty-eight million, eight hundred seventeen thousand, nine hundred ninety-two".