20200423056 has 40 divisors (see below), whose sum is σ = 56928466464. Its totient is φ = 6121340160.

The previous prime is 20200423051. The next prime is 20200423069. The reversal of 20200423056 is 65032400202.

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

It is not an unprimeable number, because it can be changed into a prime (20200423051) 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, 19128661 + ... + 19129716.

Almost surely, 2^20200423056 is an apocalyptic number.

It is an amenable number.

20200423056 is an abundant number, since it is smaller than the sum of its proper divisors (36728043408).

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

20200423056 is a wasteful number, since it uses less digits than its factorization.

20200423056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38258399 (or 38258393 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20200423056 its reverse (65032400202), we get a palindrome (85232823258).

The spelling of 20200423056 in words is "twenty billion, two hundred million, four hundred twenty-three thousand, fifty-six".