222904990 has 48 divisors (see below), whose sum is σ = 504042336. Its totient is φ = 69474240.

The previous prime is 222904963. The next prime is 222904993. The reversal of 222904990 is 99409222.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222904993) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4689 + ... + 21628.

It is an arithmetic number, because the mean of its divisors is an integer number (10500882).

Almost surely, 2^222904990 is an apocalyptic number.

222904990 is an abundant number, since it is smaller than the sum of its proper divisors (281137346).

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

222904990 is a wasteful number, since it uses less digits than its factorization.

222904990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26353 (or 26342 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 222904990 is about 14930.0030140653. The cubic root of 222904990 is about 606.3265657363.

The spelling of 222904990 in words is "two hundred twenty-two million, nine hundred four thousand, nine hundred ninety".