22223990 has 16 divisors (see below), whose sum is σ = 40149648. Its totient is φ = 8857056.

The previous prime is 22223989. The next prime is 22224023. The reversal of 22223990 is 9932222.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1097 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (2509353).

Almost surely, 2^22223990 is an apocalyptic number.

22223990 is a deficient number, since it is larger than the sum of its proper divisors (17925658).

22223990 is a wasteful number, since it uses less digits than its factorization.

22223990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22223990 is about 4714.2327053297. The cubic root of 22223990 is about 281.1516765772.

The spelling of 22223990 in words is "twenty-two million, two hundred twenty-three thousand, nine hundred ninety".