238221349992 has 48 divisors (see below), whose sum is σ = 646270936740. Its totient is φ = 79273195008.

The previous prime is 238221349969. The next prime is 238221350099. The reversal of 238221349992 is 299943122832.

238221349992 is a `hidden beast` number, since 2 + 38 + 22 + 13 + 499 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 219636571716 + 18584778276 = 468654^2 + 136326^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2747043 + ... + 2832434.

Almost surely, 2^238221349992 is an apocalyptic number.

It is an amenable number.

238221349992 is an abundant number, since it is smaller than the sum of its proper divisors (408049586748).

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

238221349992 is a wasteful number, since it uses less digits than its factorization.

238221349992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580082 (or 5580075 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 238221349992 in words is "two hundred thirty-eight billion, two hundred twenty-one million, three hundred forty-nine thousand, nine hundred ninety-two".