20331472288 has 96 divisors (see below), whose sum is σ = 43020657792. Its totient is φ = 9434726400.

The previous prime is 20331472267. The next prime is 20331472289. The reversal of 20331472288 is 88227413302.

It is a self number, because there is not a number n which added to its sum of digits gives 20331472288.

It is not an unprimeable number, because it can be changed into a prime (20331472289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5822223 + ... + 5825713.

It is an arithmetic number, because the mean of its divisors is an integer number (448131852).

Almost surely, 2^20331472288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331472288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21510328896).

20331472288 is an abundant number, since it is smaller than the sum of its proper divisors (22689185504).

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

20331472288 is a wasteful number, since it uses less digits than its factorization.

20331472288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20331472288 in words is "twenty billion, three hundred thirty-one million, four hundred seventy-two thousand, two hundred eighty-eight".