22018468 has 12 divisors (see below), whose sum is σ = 40799052. Its totient is φ = 10361600.

The previous prime is 22018433. The next prime is 22018471. The reversal of 22018468 is 86481022.

It can be written as a sum of positive squares in 2 ways, for example, as 18301284 + 3717184 = 4278^2 + 1928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161833 + ... + 161968.

It is an arithmetic number, because the mean of its divisors is an integer number (3399921).

Almost surely, 2^22018468 is an apocalyptic number.

It is an amenable number.

22018468 is a deficient number, since it is larger than the sum of its proper divisors (18780584).

22018468 is a wasteful number, since it uses less digits than its factorization.

22018468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323822 (or 323820 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 22018468 is about 4692.3840422540. The cubic root of 22018468 is about 280.2823172914.

The spelling of 22018468 in words is "twenty-two million, eighteen thousand, four hundred sixty-eight".