22085818 has 16 divisors (see below), whose sum is σ = 34258824. Its totient is φ = 10670400.

The previous prime is 22085807. The next prime is 22085821. The reversal of 22085818 is 81858022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16670889 + 5414929 = 4083^2 + 2327^2 .

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, 10668 + ... + 12568.

Almost surely, 2^22085818 is an apocalyptic number.

22085818 is a deficient number, since it is larger than the sum of its proper divisors (12173006).

22085818 is a wasteful number, since it uses less digits than its factorization.

22085818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 22085818 is about 4699.5550853246. Note that the first 3 decimals coincide. The cubic root of 22085818 is about 280.5678018784.

The spelling of 22085818 in words is "twenty-two million, eighty-five thousand, eight hundred eighteen".