22265556 has 12 divisors (see below), whose sum is σ = 51952992. Its totient is φ = 7421848.

The previous prime is 22265543. The next prime is 22265557. The reversal of 22265556 is 65556222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22265557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927720 + ... + 927743.

It is an arithmetic number, because the mean of its divisors is an integer number (4329416).

Almost surely, 2^22265556 is an apocalyptic number.

It is an amenable number.

22265556 is an abundant number, since it is smaller than the sum of its proper divisors (29687436).

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

22265556 is a wasteful number, since it uses less digits than its factorization.

22265556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855470 (or 1855468 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 22265556 is about 4718.6392106199. The cubic root of 22265556 is about 281.3268487283.

The spelling of 22265556 in words is "twenty-two million, two hundred sixty-five thousand, five hundred fifty-six".