28709483112 has 96 divisors (see below), whose sum is σ = 80131058280. Its totient is φ = 9279152640.

The previous prime is 28709483093. The next prime is 28709483123. The reversal of 28709483112 is 21138490782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27064856196 + 1644626916 = 164514^2 + 40554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 762162 + ... + 798942.

Almost surely, 2^28709483112 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 28709483112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40065529140).

28709483112 is an abundant number, since it is smaller than the sum of its proper divisors (51421575168).

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

28709483112 is a wasteful number, since it uses less digits than its factorization.

28709483112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37123 (or 37116 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 28709483112 in words is "twenty-eight billion, seven hundred nine million, four hundred eighty-three thousand, one hundred twelve".