239782668 has 12 divisors (see below), whose sum is σ = 559492920. Its totient is φ = 79927552.

The previous prime is 239782633. The next prime is 239782733. The reversal of 239782668 is 866287932.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 239782668.

It is an unprimeable number.

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, 9990933 + ... + 9990956.

It is an arithmetic number, because the mean of its divisors is an integer number (46624410).

Almost surely, 2^239782668 is an apocalyptic number.

It is an amenable number.

239782668 is an abundant number, since it is smaller than the sum of its proper divisors (319710252).

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

239782668 is a wasteful number, since it uses less digits than its factorization.

239782668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19981896 (or 19981894 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 239782668 is about 15484.9174360085. The cubic root of 239782668 is about 621.2588609138.

The spelling of 239782668 in words is "two hundred thirty-nine million, seven hundred eighty-two thousand, six hundred sixty-eight".