239128168 has 8 divisors (see below), whose sum is σ = 448365330. Its totient is φ = 119564080.

The previous prime is 239128139. The next prime is 239128187. The reversal of 239128168 is 861821932.

It can be written as a sum of positive squares in only one way, i.e., 157803844 + 81324324 = 12562^2 + 9018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 239128168.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14945503 + ... + 14945518.

Almost surely, 2^239128168 is an apocalyptic number.

It is an amenable number.

239128168 is a deficient number, since it is larger than the sum of its proper divisors (209237162).

239128168 is a wasteful number, since it uses less digits than its factorization.

239128168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29891027 (or 29891023 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 239128168 is about 15463.7695275117. The cubic root of 239128168 is about 620.6930924087.

The spelling of 239128168 in words is "two hundred thirty-nine million, one hundred twenty-eight thousand, one hundred sixty-eight".