22245188 has 12 divisors (see below), whose sum is σ = 44490432. Its totient is φ = 9533640.

The previous prime is 22245187. The next prime is 22245199. The reversal of 22245188 is 88154222.

22245188 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22245187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397208 + ... + 397263.

It is an arithmetic number, because the mean of its divisors is an integer number (3707536).

Almost surely, 2^22245188 is an apocalyptic number.

22245188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22245188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22245188 is a wasteful number, since it uses less digits than its factorization.

22245188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794482 (or 794480 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 22245188 is about 4716.4804674672. The cubic root of 22245188 is about 281.2410388585.

The spelling of 22245188 in words is "twenty-two million, two hundred forty-five thousand, one hundred eighty-eight".