238618656 has 192 divisors, whose sum is σ = 735436800. Its totient is φ = 75168000.

The previous prime is 238618643. The next prime is 238618657. The reversal of 238618656 is 656816832.

238618656 is a `hidden beast` number, since 23 + 8 + 618 + 6 + 5 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (238618657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1580181 + ... + 1580331.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^238618656 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 238618656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367718400).

238618656 is an abundant number, since it is smaller than the sum of its proper divisors (496818144).

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

238618656 is a wasteful number, since it uses less digits than its factorization.

238618656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 246 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 238618656 is about 15447.2863636303. The cubic root of 238618656 is about 620.2519406193.

The spelling of 238618656 in words is "two hundred thirty-eight million, six hundred eighteen thousand, six hundred fifty-six".