222788644 has 36 divisors (see below), whose sum is σ = 425394480. Its totient is φ = 102042720.

The previous prime is 222788639. The next prime is 222788651. The reversal of 222788644 is 446887222.

222788644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 222788644.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92779 + ... + 95149.

Almost surely, 2^222788644 is an apocalyptic number.

It is an amenable number.

222788644 is a deficient number, since it is larger than the sum of its proper divisors (202605836).

222788644 is a wasteful number, since it uses less digits than its factorization.

222788644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540 (or 2525 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 222788644 is about 14926.1061231655. The cubic root of 222788644 is about 606.2210559888.

The spelling of 222788644 in words is "two hundred twenty-two million, seven hundred eighty-eight thousand, six hundred forty-four".