22256838 has 12 divisors (see below), whose sum is σ = 48223188. Its totient is φ = 7418940.

The previous prime is 22256837. The next prime is 22256849. The reversal of 22256838 is 83865222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22256831) 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 5 ways as a sum of consecutive naturals, for example, 618228 + ... + 618263.

It is an arithmetic number, because the mean of its divisors is an integer number (4018599).

Almost surely, 2^22256838 is an apocalyptic number.

22256838 is an abundant number, since it is smaller than the sum of its proper divisors (25966350).

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

22256838 is a wasteful number, since it uses less digits than its factorization.

22256838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236499 (or 1236496 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 22256838 is about 4717.7153368977. The cubic root of 22256838 is about 281.2901264230.

The spelling of 22256838 in words is "twenty-two million, two hundred fifty-six thousand, eight hundred thirty-eight".