208628928 has 42 divisors (see below), whose sum is σ = 597998804. Its totient is φ = 69542784.

The previous prime is 208628923. The next prime is 208628957. The reversal of 208628928 is 829826802.

208628928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (208628923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180526 + ... + 181677.

Almost surely, 2^208628928 is an apocalyptic number.

It is an amenable number.

208628928 is an abundant number, since it is smaller than the sum of its proper divisors (389369876).

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

208628928 is a wasteful number, since it uses less digits than its factorization.

208628928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362221 (or 362208 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 208628928 is about 14443.9927997767. The cubic root of 208628928 is about 593.0957912341.

The spelling of 208628928 in words is "two hundred eight million, six hundred twenty-eight thousand, nine hundred twenty-eight".