22805398 has 64 divisors (see below), whose sum is σ = 46780416. Its totient is φ = 8064000.

The previous prime is 22805383. The next prime is 22805407. The reversal of 22805398 is 89350822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81018 + ... + 81298.

It is an arithmetic number, because the mean of its divisors is an integer number (730944).

Almost surely, 2^22805398 is an apocalyptic number.

22805398 is an abundant number, since it is smaller than the sum of its proper divisors (23975018).

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

22805398 is a wasteful number, since it uses less digits than its factorization.

22805398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 22805398 is about 4775.4997644226. The cubic root of 22805398 is about 283.5823640613.

The spelling of 22805398 in words is "twenty-two million, eight hundred five thousand, three hundred ninety-eight".