20748812832 has 216 divisors, whose sum is σ = 65068632720. Its totient is φ = 6266937600.

The previous prime is 20748812827. The next prime is 20748812837. The reversal of 20748812832 is 23821884702.

It is an interprime number because it is at equal distance from previous prime (20748812827) and next prime (20748812837).

It is not an unprimeable number, because it can be changed into a prime (20748812837) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13206607 + ... + 13208177.

It is an arithmetic number, because the mean of its divisors is an integer number (301243670).

Almost surely, 2^20748812832 is an apocalyptic number.

20748812832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20748812832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32534316360).

20748812832 is an abundant number, since it is smaller than the sum of its proper divisors (44319819888).

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

20748812832 is a wasteful number, since it uses less digits than its factorization.

20748812832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 20748812832 in words is "twenty billion, seven hundred forty-eight million, eight hundred twelve thousand, eight hundred thirty-two".