20200056 has 32 divisors (see below), whose sum is σ = 51026640. Its totient is φ = 6663168.

The previous prime is 20200043. The next prime is 20200057. The reversal of 20200056 is 65000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200057) 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, 2011 + ... + 6666.

Almost surely, 2^20200056 is an apocalyptic number.

It is an amenable number.

20200056 is an abundant number, since it is smaller than the sum of its proper divisors (30826584).

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

20200056 is a wasteful number, since it uses less digits than its factorization.

20200056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8783 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20200056 is about 4494.4472407628. The cubic root of 20200056 is about 272.3438198273.

Adding to 20200056 its reverse (65000202), we get a palindrome (85200258).

The spelling of 20200056 in words is "twenty million, two hundred thousand, fifty-six".