208409228 has 6 divisors (see below), whose sum is σ = 364716156. Its totient is φ = 104204612.

The previous prime is 208409219. The next prime is 208409231. The reversal of 208409228 is 822904802.

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 as a sum of consecutive naturals, namely, 26051150 + ... + 26051157.

It is an arithmetic number, because the mean of its divisors is an integer number (60786026).

Almost surely, 2^208409228 is an apocalyptic number.

It is an amenable number.

208409228 is a deficient number, since it is larger than the sum of its proper divisors (156306928).

208409228 is a wasteful number, since it uses less digits than its factorization.

208409228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52102311 (or 52102309 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 208409228 is about 14436.3855587193. The cubic root of 208409228 is about 592.8875284705.

The spelling of 208409228 in words is "two hundred eight million, four hundred nine thousand, two hundred twenty-eight".