28176565984 has 96 divisors (see below), whose sum is σ = 64182053376. Its totient is φ = 11927139840.

The previous prime is 28176565943. The next prime is 28176565993. The reversal of 28176565984 is 48956567182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6095194 + ... + 6099814.

It is an arithmetic number, because the mean of its divisors is an integer number (668563056).

Almost surely, 2^28176565984 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 28176565984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32091026688).

28176565984 is an abundant number, since it is smaller than the sum of its proper divisors (36005487392).

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

28176565984 is a wasteful number, since it uses less digits than its factorization.

28176565984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968 (or 4960 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 61.

The spelling of 28176565984 in words is "twenty-eight billion, one hundred seventy-six million, five hundred sixty-five thousand, nine hundred eighty-four".