28912000021982 has 96 divisors (see below), whose sum is σ = 57688099487424. Its totient is φ = 10600947624960.

The previous prime is 28912000021973. The next prime is 28912000022021.

28912000021982 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 47 ways as a sum of consecutive naturals, for example, 439914188 + ... + 439979904.

It is an arithmetic number, because the mean of its divisors is an integer number (600917702994).

Almost surely, 2^{28912000021982} is an apocalyptic number.

28912000021982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28912000021982 is a deficient number, since it is larger than the sum of its proper divisors (28776099465442).

28912000021982 is a wasteful number, since it uses less digits than its factorization.

28912000021982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81042 (or 81031 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

It can be divided in two parts, 289120000 and 21982, that added together give a palindrome (289141982).

The spelling of 28912000021982 in words is "twenty-eight trillion, nine hundred twelve billion, twenty-one thousand, nine hundred eighty-two".