222990138 has 32 divisors (see below), whose sum is σ = 566325120. Its totient is φ = 63711360.

The previous prime is 222990121. The next prime is 222990143. The reversal of 222990138 is 831099222.

222990138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294583 + ... + 295338.

It is an arithmetic number, because the mean of its divisors is an integer number (17697660).

Almost surely, 2^222990138 is an apocalyptic number.

222990138 is an abundant number, since it is smaller than the sum of its proper divisors (343334982).

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

222990138 is a wasteful number, since it uses less digits than its factorization.

222990138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589939 (or 589933 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 222990138 is about 14932.8543152339. The cubic root of 222990138 is about 606.4037599437.

The spelling of 222990138 in words is "two hundred twenty-two million, nine hundred ninety thousand, one hundred thirty-eight".