22216668 has 24 divisors (see below), whose sum is σ = 53627280. Its totient is φ = 7150080.

The previous prime is 22216661. The next prime is 22216673. The reversal of 22216668 is 86661222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22216661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31573 + ... + 32268.

It is an arithmetic number, because the mean of its divisors is an integer number (2234470).

Almost surely, 2^22216668 is an apocalyptic number.

It is an amenable number.

22216668 is an abundant number, since it is smaller than the sum of its proper divisors (31410612).

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

22216668 is a wasteful number, since it uses less digits than its factorization.

22216668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63877 (or 63875 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 22216668 is about 4713.4560568653. The cubic root of 22216668 is about 281.1207967533.

The spelling of 22216668 in words is "twenty-two million, two hundred sixteen thousand, six hundred sixty-eight".