28984973907968 has 192 divisors, whose sum is σ = 63549109784160. Its totient is φ = 13135144550400.

The previous prime is 28984973907943. The next prime is 28984973907997. The reversal of 28984973907968 is 86970937948982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937069463 + ... + 937100393.

Almost surely, 2^{28984973907968} 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 28984973907968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31774554892080).

28984973907968 is an abundant number, since it is smaller than the sum of its proper divisors (34564135876192).

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

28984973907968 is a wasteful number, since it uses less digits than its factorization.

28984973907968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31604 (or 31584 counting only the distinct ones).

The product of its (nonzero) digits is 23702740992, while the sum is 89.

The spelling of 28984973907968 in words is "twenty-eight trillion, nine hundred eighty-four billion, nine hundred seventy-three million, nine hundred seven thousand, nine hundred sixty-eight".