28971817982 has 16 divisors (see below), whose sum is σ = 43563018240. Its totient is φ = 14450834808.

The previous prime is 28971817969. The next prime is 28971817993.

28971817982 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4788083 + ... + 4794129.

It is an arithmetic number, because the mean of its divisors is an integer number (2722688640).

Almost surely, 2^28971817982 is an apocalyptic number.

28971817982 is a deficient number, since it is larger than the sum of its proper divisors (14591200258).

28971817982 is a wasteful number, since it uses less digits than its factorization.

28971817982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11455.

The product of its digits is 8128512, while the sum is 62.

The spelling of 28971817982 in words is "twenty-eight billion, nine hundred seventy-one million, eight hundred seventeen thousand, nine hundred eighty-two".