22008805 has 16 divisors (see below), whose sum is σ = 32505984. Its totient is φ = 13930560.

The previous prime is 22008799. The next prime is 22008817. The reversal of 22008805 is 50880022.

It is not a de Polignac number, because 22008805 - 2³ = 22008797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22008805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23731 + ... + 24640.

It is an arithmetic number, because the mean of its divisors is an integer number (2031624).

Almost surely, 2^22008805 is an apocalyptic number.

It is an amenable number.

22008805 is a deficient number, since it is larger than the sum of its proper divisors (10497179).

22008805 is a wasteful number, since it uses less digits than its factorization.

22008805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48396.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 22008805 is about 4691.3542820810. The cubic root of 22008805 is about 280.2413098316.

Adding to 22008805 its reverse (50880022), we get a palindrome (72888827).

The spelling of 22008805 in words is "twenty-two million, eight thousand, eight hundred five".