208727628 has 12 divisors (see below), whose sum is σ = 487031160. Its totient is φ = 69575872.

The previous prime is 208727627. The next prime is 208727639. The reversal of 208727628 is 826727802.

208727628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 208727628.

It is not an unprimeable number, because it can be changed into a prime (208727627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8696973 + ... + 8696996.

It is an arithmetic number, because the mean of its divisors is an integer number (40585930).

Almost surely, 2^208727628 is an apocalyptic number.

It is an amenable number.

208727628 is an abundant number, since it is smaller than the sum of its proper divisors (278303532).

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

208727628 is a wasteful number, since it uses less digits than its factorization.

208727628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17393976 (or 17393974 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 208727628 is about 14447.4090410703. The cubic root of 208727628 is about 593.1893054722.

The spelling of 208727628 in words is "two hundred eight million, seven hundred twenty-seven thousand, six hundred twenty-eight".