208420812 has 36 divisors (see below), whose sum is σ = 543839296. Its totient is φ = 67232160.

The previous prime is 208420789. The next prime is 208420819. The reversal of 208420812 is 218024802.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (208420819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92263 + ... + 94494.

Almost surely, 2^208420812 is an apocalyptic number.

It is an amenable number.

208420812 is an abundant number, since it is smaller than the sum of its proper divisors (335418484).

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

208420812 is a wasteful number, since it uses less digits than its factorization.

208420812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186798 (or 186793 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 208420812 is about 14436.7867616032. The cubic root of 208420812 is about 592.8985130799.

The spelling of 208420812 in words is "two hundred eight million, four hundred twenty thousand, eight hundred twelve".