28321043468 has 12 divisors (see below), whose sum is σ = 51716688240. Its totient is φ = 13544846832.

The previous prime is 28321043467. The next prime is 28321043473. The reversal of 28321043468 is 86434012382.

It is not an unprimeable number, because it can be changed into a prime (28321043467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153918623 + ... + 153918806.

It is an arithmetic number, because the mean of its divisors is an integer number (4309724020).

Almost surely, 2^28321043468 is an apocalyptic number.

It is an amenable number.

28321043468 is a deficient number, since it is larger than the sum of its proper divisors (23395644772).

28321043468 is a wasteful number, since it uses less digits than its factorization.

28321043468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307837456 (or 307837454 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 28321043468 in words is "twenty-eight billion, three hundred twenty-one million, forty-three thousand, four hundred sixty-eight".