238688688 has 40 divisors (see below), whose sum is σ = 704700928. Its totient is φ = 68196672.

The previous prime is 238688683. The next prime is 238688713. The reversal of 238688688 is 886886832.

It is a super-2 number, since 2×238688688² = 113944579558322688, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (238688683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354856 + ... + 355527.

Almost surely, 2^238688688 is an apocalyptic number.

238688688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

238688688 is an abundant number, since it is smaller than the sum of its proper divisors (466012240).

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

238688688 is a wasteful number, since it uses less digits than its factorization.

238688688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710401 (or 710395 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 57.

The square root of 238688688 is about 15449.5530032425. The cubic root of 238688688 is about 620.3126137674.

The spelling of 238688688 in words is "two hundred thirty-eight million, six hundred eighty-eight thousand, six hundred eighty-eight".