28132756806 has 96 divisors (see below), whose sum is σ = 71542700928. Its totient is φ = 7292799360.

The previous prime is 28132756801. The next prime is 28132756807. The reversal of 28132756806 is 60865723182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132756801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1683066 + ... + 1699698.

It is an arithmetic number, because the mean of its divisors is an integer number (745236468).

Almost surely, 2^28132756806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28132756806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35771350464).

28132756806 is an abundant number, since it is smaller than the sum of its proper divisors (43409944122).

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

28132756806 is a wasteful number, since it uses less digits than its factorization.

28132756806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17186 (or 17179 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 28132756806 in words is "twenty-eight billion, one hundred thirty-two million, seven hundred fifty-six thousand, eight hundred six".