208820612 has 48 divisors (see below), whose sum is σ = 490664832. Its totient is φ = 75098880.

The previous prime is 208820609. The next prime is 208820663. The reversal of 208820612 is 216028802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22073 + ... + 30080.

It is an arithmetic number, because the mean of its divisors is an integer number (10222184).

Almost surely, 2^208820612 is an apocalyptic number.

208820612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

208820612 is an abundant number, since it is smaller than the sum of its proper divisors (281844220).

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

208820612 is a wasteful number, since it uses less digits than its factorization.

208820612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52188 (or 52186 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 208820612 is about 14450.6266992127. The cubic root of 208820612 is about 593.2773770681.

The spelling of 208820612 in words is "two hundred eight million, eight hundred twenty thousand, six hundred twelve".