208517030 has 16 divisors (see below), whose sum is σ = 376412400. Its totient is φ = 83166432.

The previous prime is 208517003. The next prime is 208517081. The reversal of 208517030 is 30715802.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26384 + ... + 33363.

It is an arithmetic number, because the mean of its divisors is an integer number (23525775).

Almost surely, 2^208517030 is an apocalyptic number.

208517030 is a deficient number, since it is larger than the sum of its proper divisors (167895370).

208517030 is a wasteful number, since it uses less digits than its factorization.

208517030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60103.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 208517030 is about 14440.1187668246. The cubic root of 208517030 is about 592.9897367475.

The spelling of 208517030 in words is "two hundred eight million, five hundred seventeen thousand, thirty".