238694688 has 120 divisors (see below), whose sum is σ = 743425452. Its totient is φ = 74870784.

The previous prime is 238694681. The next prime is 238694719. The reversal of 238694688 is 886496832.

238694688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 236298384 + 2396304 = 15372^2 + 1548^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

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 (238694681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41356 + ... + 46772.

Almost surely, 2^238694688 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 238694688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371712726).

238694688 is an abundant number, since it is smaller than the sum of its proper divisors (504730764).

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

238694688 is a wasteful number, since it uses less digits than its factorization.

238694688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456 (or 5439 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 238694688 is about 15449.7471823975. The cubic root of 238694688 is about 620.3178113946.

The spelling of 238694688 in words is "two hundred thirty-eight million, six hundred ninety-four thousand, six hundred eighty-eight".