28285080516 has 324 divisors, whose sum is σ = 93104409216. Its totient is φ = 7087006080.

The previous prime is 28285080491. The next prime is 28285080559. The reversal of 28285080516 is 61508058282.

28285080516 is a `hidden beast` number, since 2 + 8 + 2 + 8 + 50 + 80 + 516 = 666.

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 107 ways as a sum of consecutive naturals, for example, 25643221 + ... + 25644323.

Almost surely, 2^28285080516 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 28285080516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46552204608).

28285080516 is an abundant number, since it is smaller than the sum of its proper divisors (64819328700).

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

28285080516 is a wasteful number, since it uses less digits than its factorization.

28285080516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The spelling of 28285080516 in words is "twenty-eight billion, two hundred eighty-five million, eighty thousand, five hundred sixteen".