22000556 has 24 divisors (see below), whose sum is σ = 40842480. Its totient is φ = 10340352.

The previous prime is 22000553. The next prime is 22000579. The reversal of 22000556 is 65500022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22000553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9356 + ... + 11468.

It is an arithmetic number, because the mean of its divisors is an integer number (1701770).

Almost surely, 2^22000556 is an apocalyptic number.

It is an amenable number.

22000556 is a deficient number, since it is larger than the sum of its proper divisors (18841924).

22000556 is a wasteful number, since it uses less digits than its factorization.

22000556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2271 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 22000556 is about 4690.4750292481. The cubic root of 22000556 is about 280.2062935515.

Adding to 22000556 its reverse (65500022), we get a palindrome (87500578).

The spelling of 22000556 in words is "twenty-two million, five hundred fifty-six", and thus it is an aban number.