22288806 has 12 divisors (see below), whose sum is σ = 48292452. Its totient is φ = 7429596.

The previous prime is 22288793. The next prime is 22288807. The reversal of 22288806 is 60888222.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22288807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619116 + ... + 619151.

It is an arithmetic number, because the mean of its divisors is an integer number (4024371).

Almost surely, 2^22288806 is an apocalyptic number.

22288806 is an abundant number, since it is smaller than the sum of its proper divisors (26003646).

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

22288806 is a wasteful number, since it uses less digits than its factorization.

22288806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238275 (or 1238272 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 22288806 is about 4721.1022018169. The cubic root of 22288806 is about 281.4247364534.

The spelling of 22288806 in words is "twenty-two million, two hundred eighty-eight thousand, eight hundred six".