22180056 has 32 divisors (see below), whose sum is σ = 55566000. Its totient is φ = 7377920.

The previous prime is 22180031. The next prime is 22180063. The reversal of 22180056 is 65008122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20620 + ... + 21668.

Almost surely, 2^22180056 is an apocalyptic number.

It is an amenable number.

22180056 is an abundant number, since it is smaller than the sum of its proper divisors (33385944).

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

22180056 is a wasteful number, since it uses less digits than its factorization.

22180056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 22180056 is about 4709.5706810706. The cubic root of 22180056 is about 280.9662873314.

Adding to 22180056 its reverse (65008122), we get a palindrome (87188178).

The spelling of 22180056 in words is "twenty-two million, one hundred eighty thousand, fifty-six".