28079872912 has 320 divisors, whose sum is σ = 73595289600. Its totient is φ = 10067742720.

The previous prime is 28079872837. The next prime is 28079872913. The reversal of 28079872912 is 21927897082.

It is not an unprimeable number, because it can be changed into a prime (28079872913) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117488889 + ... + 117489127.

It is an arithmetic number, because the mean of its divisors is an integer number (229985280).

Almost surely, 2^28079872912 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 28079872912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36797644800).

28079872912 is an abundant number, since it is smaller than the sum of its proper divisors (45515416688).

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

28079872912 is a wasteful number, since it uses less digits than its factorization.

28079872912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 28079872912 in words is "twenty-eight billion, seventy-nine million, eight hundred seventy-two thousand, nine hundred twelve".