28879792128 has 432 divisors, whose sum is σ = 95838331680. Its totient is φ = 8356085760.

The previous prime is 28879792127. The next prime is 28879792133. The reversal of 28879792128 is 82129797882.

28879792128 is a `hidden beast` number, since 288 + 79 + 79 + 212 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28879792127) 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, 51295975 + ... + 51296537.

It is an arithmetic number, because the mean of its divisors is an integer number (221847990).

Almost surely, 2^28879792128 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 28879792128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47919165840).

28879792128 is an abundant number, since it is smaller than the sum of its proper divisors (66958539552).

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

28879792128 is a wasteful number, since it uses less digits than its factorization.

28879792128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 602 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 63.

The spelling of 28879792128 in words is "twenty-eight billion, eight hundred seventy-nine million, seven hundred ninety-two thousand, one hundred twenty-eight".