22180868 has 12 divisors (see below), whose sum is σ = 38850252. Its totient is φ = 11080800.

The previous prime is 22180859. The next prime is 22180889. The reversal of 22180868 is 86808122.

It can be written as a sum of positive squares in 2 ways, for example, as 13897984 + 8282884 = 3728^2 + 2878^2 .

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, 6146 + ... + 9062.

It is an arithmetic number, because the mean of its divisors is an integer number (3237521).

Almost surely, 2^22180868 is an apocalyptic number.

It is an amenable number.

22180868 is a deficient number, since it is larger than the sum of its proper divisors (16669384).

22180868 is a wasteful number, since it uses less digits than its factorization.

22180868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 22180868 is about 4709.6568877149. The cubic root of 22180868 is about 280.9697159648.

The spelling of 22180868 in words is "twenty-two million, one hundred eighty thousand, eight hundred sixty-eight".