22188807 has 12 divisors (see below), whose sum is σ = 32238024. Its totient is φ = 14706000.

The previous prime is 22188797. The next prime is 22188833. The reversal of 22188807 is 70888122.

It is not a de Polignac number, because 22188807 - 2⁶ = 22188743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22188007) 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 11 ways as a sum of consecutive naturals, for example, 5569 + ... + 8682.

It is an arithmetic number, because the mean of its divisors is an integer number (2686502).

Almost surely, 2^22188807 is an apocalyptic number.

22188807 is a deficient number, since it is larger than the sum of its proper divisors (10049217).

22188807 is a wasteful number, since it uses less digits than its factorization.

22188807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14430 (or 14427 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 22188807 is about 4710.4996550260. The cubic root of 22188807 is about 281.0032336267.

It can be divided in two parts, 2218 and 8807, that added together give a square (11025 = 105²).

The spelling of 22188807 in words is "twenty-two million, one hundred eighty-eight thousand, eight hundred seven".