238308664 has 16 divisors (see below), whose sum is σ = 487449720. Its totient is φ = 108322080.

The previous prime is 238308661. The next prime is 238308671. The reversal of 238308664 is 466803832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238308661) 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 3 ways as a sum of consecutive naturals, for example, 1353939 + ... + 1354114.

Almost surely, 2^238308664 is an apocalyptic number.

It is an amenable number.

238308664 is an abundant number, since it is smaller than the sum of its proper divisors (249141056).

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

238308664 is a wasteful number, since it uses less digits than its factorization.

238308664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708070 (or 2708066 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 238308664 is about 15437.2492368297. The cubic root of 238308664 is about 619.9832322902.

The spelling of 238308664 in words is "two hundred thirty-eight million, three hundred eight thousand, six hundred sixty-four".