28984973907967 has 32 divisors (see below), whose sum is σ = 36211968428544. Its totient is φ = 22538930064000.

The previous prime is 28984973907943. The next prime is 28984973907997. The reversal of 28984973907967 is 76970937948982.

It is a de Polignac number, because none of the positive numbers 2^k-28984973907967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28984973907997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158640888 + ... + 158823490.

It is an arithmetic number, because the mean of its divisors is an integer number (1131624013392).

Almost surely, 2^{28984973907967} is an apocalyptic number.

28984973907967 is a deficient number, since it is larger than the sum of its proper divisors (7226994520577).

28984973907967 is a wasteful number, since it uses less digits than its factorization.

28984973907967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186879.

The product of its (nonzero) digits is 20739898368, while the sum is 88.

The spelling of 28984973907967 in words is "twenty-eight trillion, nine hundred eighty-four billion, nine hundred seventy-three million, nine hundred seven thousand, nine hundred sixty-seven".