208768438 has 4 divisors (see below), whose sum is σ = 313152660. Its totient is φ = 104384218.

The previous prime is 208768411. The next prime is 208768453. The reversal of 208768438 is 834867802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834867802 = 2 ⋅417433901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52192108 + ... + 52192111.

It is an arithmetic number, because the mean of its divisors is an integer number (78288165).

Almost surely, 2^208768438 is an apocalyptic number.

208768438 is a deficient number, since it is larger than the sum of its proper divisors (104384222).

208768438 is a wasteful number, since it uses less digits than its factorization.

208768438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104384221.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 208768438 is about 14448.8213360122. The cubic root of 208768438 is about 593.2279626739.

The spelling of 208768438 in words is "two hundred eight million, seven hundred sixty-eight thousand, four hundred thirty-eight".