28968465938 has 12 divisors (see below), whose sum is σ = 45860051790. Its totient is φ = 13721904576.

The previous prime is 28968465931. The next prime is 28968465943. The reversal of 28968465938 is 83956486982.

It can be written as a sum of positive squares in only one way, i.e., 28897620049 + 70845889 = 169993^2 + 8417^2 .

It is not an unprimeable number, because it can be changed into a prime (28968465931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20060543 + ... + 20061986.

Almost surely, 2^28968465938 is an apocalyptic number.

28968465938 is a deficient number, since it is larger than the sum of its proper divisors (16891585852).

28968465938 is a wasteful number, since it uses less digits than its factorization.

28968465938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40122569 (or 40122550 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 68.

The spelling of 28968465938 in words is "twenty-eight billion, nine hundred sixty-eight million, four hundred sixty-five thousand, nine hundred thirty-eight".