28680038244 has 288 divisors, whose sum is σ = 90964823040. Its totient is φ = 7494681600.

The previous prime is 28680038161. The next prime is 28680038249. The reversal of 28680038244 is 44283008682.

It is a self number, because there is not a number n which added to its sum of digits gives 28680038244.

It is not an unprimeable number, because it can be changed into a prime (28680038249) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4624954 + ... + 4631150.

It is an arithmetic number, because the mean of its divisors is an integer number (315850080).

Almost surely, 2^28680038244 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 28680038244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45482411520).

28680038244 is an abundant number, since it is smaller than the sum of its proper divisors (62284784796).

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

28680038244 is a wasteful number, since it uses less digits than its factorization.

28680038244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291 (or 6286 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 28680038244 in words is "twenty-eight billion, six hundred eighty million, thirty-eight thousand, two hundred forty-four".