20620728112 has 80 divisors (see below), whose sum is σ = 42057879552. Its totient is φ = 9782588160.

The previous prime is 20620728077. The next prime is 20620728113. The reversal of 20620728112 is 21182702602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20620728113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8652073 + ... + 8654455.

Almost surely, 2^20620728112 is an apocalyptic number.

It is an amenable number.

20620728112 is an abundant number, since it is smaller than the sum of its proper divisors (21437151440).

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

20620728112 is a wasteful number, since it uses less digits than its factorization.

20620728112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 20620728112 in words is "twenty billion, six hundred twenty million, seven hundred twenty-eight thousand, one hundred twelve".