208820364 has 24 divisors (see below), whose sum is σ = 493120320. Its totient is φ = 68767824.

The previous prime is 208820363. The next prime is 208820377. The reversal of 208820364 is 463028802.

It is not an unprimeable number, because it can be changed into a prime (208820363) 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, 103834 + ... + 105825.

It is an arithmetic number, because the mean of its divisors is an integer number (20546680).

Almost surely, 2^208820364 is an apocalyptic number.

It is an amenable number.

208820364 is an abundant number, since it is smaller than the sum of its proper divisors (284299956).

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

208820364 is a wasteful number, since it uses less digits than its factorization.

208820364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209749 (or 209747 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 208820364 is about 14450.6181182675. The cubic root of 208820364 is about 593.2771422049.

The spelling of 208820364 in words is "two hundred eight million, eight hundred twenty thousand, three hundred sixty-four".