28827878112 has 432 divisors, whose sum is σ = 98021444976. Its totient is φ = 7942348800.

The previous prime is 28827878099. The next prime is 28827878119. The reversal of 28827878112 is 21187872882.

It is a happy number.

28827878112 is a `hidden beast` number, since 288 + 278 + 7 + 81 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28827878119) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51755338 + ... + 51755894.

It is an arithmetic number, because the mean of its divisors is an integer number (226901493).

Almost surely, 2^28827878112 is an apocalyptic number.

28827878112 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 28827878112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49010722488).

28827878112 is an abundant number, since it is smaller than the sum of its proper divisors (69193566864).

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

28827878112 is a wasteful number, since it uses less digits than its factorization.

28827878112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 621 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 54.

It can be divided in two parts, 288 and 27878112, that added together give a square (27878400 = 5280²).

The spelling of 28827878112 in words is "twenty-eight billion, eight hundred twenty-seven million, eight hundred seventy-eight thousand, one hundred twelve".