28568945728512 has 704 divisors, whose sum is σ = 98794442880000. Its totient is φ = 7987170115584.

The previous prime is 28568945728483. The next prime is 28568945728549. The reversal of 28568945728512 is 21582754986582.

28568945728512 is a `hidden beast` number, since 2 + 8 + 5 + 6 + 89 + 4 + 5 + 7 + 28 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1670787739 + ... + 1670804837.

Almost surely, 2^{28568945728512} 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 28568945728512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49397221440000).

28568945728512 is an abundant number, since it is smaller than the sum of its proper divisors (70225497151488).

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

28568945728512 is a wasteful number, since it uses less digits than its factorization.

28568945728512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321 (or 17297 counting only the distinct ones).

The product of its digits is 774144000, while the sum is 72.

The spelling of 28568945728512 in words is "twenty-eight trillion, five hundred sixty-eight billion, nine hundred forty-five million, seven hundred twenty-eight thousand, five hundred twelve".