208019912 has 64 divisors (see below), whose sum is σ = 421303680. Its totient is φ = 96059392.

The previous prime is 208019897. The next prime is 208019927. The reversal of 208019912 is 219910802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (208019897) and next prime (208019927).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809288 + ... + 809544.

It is an arithmetic number, because the mean of its divisors is an integer number (6582870).

Almost surely, 2^208019912 is an apocalyptic number.

It is an amenable number.

208019912 is an abundant number, since it is smaller than the sum of its proper divisors (213283768).

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

208019912 is a wasteful number, since it uses less digits than its factorization.

208019912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 208019912 is about 14422.8954097296. The cubic root of 208019912 is about 592.5181198800.

The spelling of 208019912 in words is "two hundred eight million, nineteen thousand, nine hundred twelve".