22199805 has 16 divisors (see below), whose sum is σ = 39466560. Its totient is φ = 11839824.

The previous prime is 22199797. The next prime is 22199833. The reversal of 22199805 is 50899122.

It is not a de Polignac number, because 22199805 - 2³ = 22199797 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22199805.

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 15 ways as a sum of consecutive naturals, for example, 82087 + ... + 82356.

It is an arithmetic number, because the mean of its divisors is an integer number (2466660).

Almost surely, 2^22199805 is an apocalyptic number.

It is an amenable number.

22199805 is a deficient number, since it is larger than the sum of its proper divisors (17266755).

22199805 is a wasteful number, since it uses less digits than its factorization.

22199805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164457 (or 164451 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 22199805 is about 4711.6669024879. Note that the first 3 decimals coincide. The cubic root of 22199805 is about 281.0496528731.

The spelling of 22199805 in words is "twenty-two million, one hundred ninety-nine thousand, eight hundred five".