208542868 has 6 divisors (see below), whose sum is σ = 364950026. Its totient is φ = 104271432.

The previous prime is 208542847. The next prime is 208542871. The reversal of 208542868 is 868245802.

208542868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 195496324 + 13046544 = 13982^2 + 3612^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 26067855 + ... + 26067862.

Almost surely, 2^208542868 is an apocalyptic number.

It is an amenable number.

208542868 is a deficient number, since it is larger than the sum of its proper divisors (156407158).

208542868 is a wasteful number, since it uses less digits than its factorization.

208542868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52135721 (or 52135719 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 208542868 is about 14441.0133993429. The cubic root of 208542868 is about 593.0142288094.

The spelling of 208542868 in words is "two hundred eight million, five hundred forty-two thousand, eight hundred sixty-eight".