238645656 has 64 divisors (see below), whose sum is σ = 664243200. Its totient is φ = 79388064.

The previous prime is 238645651. The next prime is 238645661. The reversal of 238645656 is 656546832.

238645656 is a `hidden beast` number, since 2 + 3 + 86 + 4 + 565 + 6 = 666.

238645656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (238645651) and next prime (238645661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238645651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159745 + ... + 161231.

It is an arithmetic number, because the mean of its divisors is an integer number (10378800).

Almost surely, 2^238645656 is an apocalyptic number.

It is an amenable number.

238645656 is an abundant number, since it is smaller than the sum of its proper divisors (425597544).

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

238645656 is a wasteful number, since it uses less digits than its factorization.

238645656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2235 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 238645656 is about 15448.1602788164. The cubic root of 238645656 is about 620.2753338319.

The spelling of 238645656 in words is "two hundred thirty-eight million, six hundred forty-five thousand, six hundred fifty-six".