208564512 has 48 divisors (see below), whose sum is σ = 589599360. Its totient is φ = 64173312.

The previous prime is 208564481. The next prime is 208564513. The reversal of 208564512 is 215465802.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (208564513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82312 + ... + 84807.

It is an arithmetic number, because the mean of its divisors is an integer number (12283320).

Almost surely, 2^208564512 is an apocalyptic number.

It is an amenable number.

208564512 is an abundant number, since it is smaller than the sum of its proper divisors (381034848).

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

208564512 is a wasteful number, since it uses less digits than its factorization.

208564512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167145 (or 167137 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 208564512 is about 14441.7627732905. The cubic root of 208564512 is about 593.0347437857.

The spelling of 208564512 in words is "two hundred eight million, five hundred sixty-four thousand, five hundred twelve".