20928660112 has 20 divisors (see below), whose sum is σ = 42312291840. Its totient is φ = 10009359008.

The previous prime is 20928660107. The next prime is 20928660119. The reversal of 20928660112 is 21106682902.

It is not an unprimeable number, because it can be changed into a prime (20928660119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28435312 + ... + 28436047.

It is an arithmetic number, because the mean of its divisors is an integer number (2115614592).

Almost surely, 2^20928660112 is an apocalyptic number.

It is an amenable number.

20928660112 is an abundant number, since it is smaller than the sum of its proper divisors (21383631728).

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

20928660112 is a wasteful number, since it uses less digits than its factorization.

20928660112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56871390 (or 56871384 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 20928660112 in words is "twenty billion, nine hundred twenty-eight million, six hundred sixty thousand, one hundred twelve".