28757094912 has 720 divisors, whose sum is σ = 106083569592. Its totient is φ = 7431782400.

The previous prime is 28757094893. The next prime is 28757094937. The reversal of 28757094912 is 21949075782.

28757094912 is a `hidden beast` number, since 2 + 87 + 5 + 70 + 9 + 491 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25902971136 + 2854123776 = 160944^2 + 53424^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 284723662 + ... + 284723762.

Almost surely, 2^28757094912 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 28757094912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53041784796).

28757094912 is an abundant number, since it is smaller than the sum of its proper divisors (77326474680).

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

28757094912 is a wasteful number, since it uses less digits than its factorization.

28757094912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 28757094912 in words is "twenty-eight billion, seven hundred fifty-seven million, ninety-four thousand, nine hundred twelve".