222990890 has 16 divisors (see below), whose sum is σ = 402372360. Its totient is φ = 88976640.

The previous prime is 222990883. The next prime is 222990949. The reversal of 222990890 is 98099222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207158449 + 15832441 = 14393^2 + 3979^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23171 + ... + 31350.

Almost surely, 2^222990890 is an apocalyptic number.

222990890 is a deficient number, since it is larger than the sum of its proper divisors (179381470).

222990890 is a wasteful number, since it uses less digits than its factorization.

222990890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54937.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 222990890 is about 14932.8794945918. The cubic root of 222990890 is about 606.4044416108.

The spelling of 222990890 in words is "two hundred twenty-two million, nine hundred ninety thousand, eight hundred ninety".