20228056 has 16 divisors (see below), whose sum is σ = 37992240. Its totient is φ = 10096800.

The previous prime is 20228053. The next prime is 20228057. The reversal of 20228056 is 65082202.

It is a self number, because there is not a number n which added to its sum of digits gives 20228056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228053) 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, 3805 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (2374515).

Almost surely, 2^20228056 is an apocalyptic number.

It is an amenable number.

20228056 is a deficient number, since it is larger than the sum of its proper divisors (17764184).

20228056 is a wasteful number, since it uses less digits than its factorization.

20228056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4310 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20228056 is about 4497.5611168721. The cubic root of 20228056 is about 272.4695968100.

The spelling of 20228056 in words is "twenty million, two hundred twenty-eight thousand, fifty-six".