222866788 has 6 divisors (see below), whose sum is σ = 390016886. Its totient is φ = 111433392.

The previous prime is 222866779. The next prime is 222866801. The reversal of 222866788 is 887668222.

It can be written as a sum of positive squares in only one way, i.e., 222666084 + 200704 = 14922^2 + 448^2 .

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 as a sum of consecutive naturals, namely, 27858345 + ... + 27858352.

Almost surely, 2^222866788 is an apocalyptic number.

It is an amenable number.

222866788 is a deficient number, since it is larger than the sum of its proper divisors (167150098).

222866788 is a wasteful number, since it uses less digits than its factorization.

222866788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55716701 (or 55716699 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 49.

The square root of 222866788 is about 14928.7235891083. The cubic root of 222866788 is about 606.2919258496.

The spelling of 222866788 in words is "two hundred twenty-two million, eight hundred sixty-six thousand, seven hundred eighty-eight".