2208728766 has 16 divisors (see below), whose sum is σ = 4429975824. Its totient is φ = 734156544.

The previous prime is 2208728761. The next prime is 2208728789. The reversal of 2208728766 is 6678278022.

It is a happy number.

2208728766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208728761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519301 + ... + 523536.

It is an arithmetic number, because the mean of its divisors is an integer number (276873489).

Almost surely, 2^2208728766 is an apocalyptic number.

2208728766 is an abundant number, since it is smaller than the sum of its proper divisors (2221247058).

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

2208728766 is a wasteful number, since it uses less digits than its factorization.

2208728766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043195.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 2208728766 is about 46997.1144433358. The cubic root of 2208728766 is about 1302.3092615776.

The spelling of 2208728766 in words is "two billion, two hundred eight million, seven hundred twenty-eight thousand, seven hundred sixty-six".