9780238688 has 48 divisors (see below), whose sum is σ = 21030556176. Its totient is φ = 4440215040.

The previous prime is 9780238679. The next prime is 9780238693. The reversal of 9780238688 is 8868320879.

It is a super-2 number, since 2×9780238688² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283970 + ... + 316542.

It is an arithmetic number, because the mean of its divisors is an integer number (438136587).

Almost surely, 2^9780238688 is an apocalyptic number.

It is an amenable number.

9780238688 is an abundant number, since it is smaller than the sum of its proper divisors (11250317488).

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

9780238688 is a wasteful number, since it uses less digits than its factorization.

9780238688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33447 (or 33439 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 59.

The square root of 9780238688 is about 98895.0893017444. The cubic root of 9780238688 is about 2138.5356016312.

The spelling of 9780238688 in words is "nine billion, seven hundred eighty million, two hundred thirty-eight thousand, six hundred eighty-eight".