239656768 has 28 divisors (see below), whose sum is σ = 512152900. Its totient is φ = 110610432.

The previous prime is 239656763. The next prime is 239656801. The reversal of 239656768 is 867656932.

It can be written as a sum of positive squares in 2 ways, for example, as 47224384 + 192432384 = 6872^2 + 13872^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239656763) 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, 143193 + ... + 144856.

It is an arithmetic number, because the mean of its divisors is an integer number (18291175).

Almost surely, 2^239656768 is an apocalyptic number.

It is an amenable number.

239656768 is an abundant number, since it is smaller than the sum of its proper divisors (272496132).

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

239656768 is a wasteful number, since it uses less digits than its factorization.

239656768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288074 (or 288064 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The square root of 239656768 is about 15480.8516561590. The cubic root of 239656768 is about 621.1501094005.

The spelling of 239656768 in words is "two hundred thirty-nine million, six hundred fifty-six thousand, seven hundred sixty-eight".