2228888666 has 32 divisors (see below), whose sum is σ = 3615840000. Its totient is φ = 1026575872.

The previous prime is 2228888647. The next prime is 2228888687. The reversal of 2228888666 is 6668888222.

It is a happy number.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477110 + ... + 481758.

It is an arithmetic number, because the mean of its divisors is an integer number (112995000).

Almost surely, 2^2228888666 is an apocalyptic number.

2228888666 is a deficient number, since it is larger than the sum of its proper divisors (1386951334).

2228888666 is a wasteful number, since it uses less digits than its factorization.

2228888666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966.

The product of its digits is 7077888, while the sum is 56.

The square root of 2228888666 is about 47211.1074430584. The cubic root of 2228888666 is about 1306.2594899427.

It can be divided in two parts, 222 and 8888666, that added together give a palindrome (8888888).

The spelling of 2228888666 in words is "two billion, two hundred twenty-eight million, eight hundred eighty-eight thousand, six hundred sixty-six".