220287688 has 16 divisors (see below), whose sum is σ = 413199360. Its totient is φ = 110101200.

The previous prime is 220287673. The next prime is 220287701. The reversal of 220287688 is 886782022.

220287688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 in 3 ways as a sum of consecutive naturals, for example, 31993 + ... + 38263.

It is an arithmetic number, because the mean of its divisors is an integer number (25824960).

Almost surely, 2^220287688 is an apocalyptic number.

It is an amenable number.

220287688 is a deficient number, since it is larger than the sum of its proper divisors (192911672).

220287688 is a wasteful number, since it uses less digits than its factorization.

220287688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10668 (or 10664 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 220287688 is about 14842.0917663246. The cubic root of 220287688 is about 603.9440981551.

The spelling of 220287688 in words is "two hundred twenty million, two hundred eighty-seven thousand, six hundred eighty-eight".