238788660 has 144 divisors (see below), whose sum is σ = 759338496. Its totient is φ = 55968000.

The previous prime is 238788659. The next prime is 238788661. The reversal of 238788660 is 66887832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (238788659) and next prime (238788661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238788661) 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 47 ways as a sum of consecutive naturals, for example, 224530 + ... + 225590.

It is an arithmetic number, because the mean of its divisors is an integer number (5273184).

Almost surely, 2^238788660 is an apocalyptic number.

238788660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238788660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379669248).

238788660 is an abundant number, since it is smaller than the sum of its proper divisors (520549836).

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

238788660 is a wasteful number, since it uses less digits than its factorization.

238788660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 238788660 is about 15452.7880979453. The cubic root of 238788660 is about 620.3992052703.

The spelling of 238788660 in words is "two hundred thirty-eight million, seven hundred eighty-eight thousand, six hundred sixty".