28873666992 has 80 divisors (see below), whose sum is σ = 75488025600. Its totient is φ = 9509154816.

The previous prime is 28873666979. The next prime is 28873667071. The reversal of 28873666992 is 29966637882.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2213353 + ... + 2226359.

It is an arithmetic number, because the mean of its divisors is an integer number (943600320).

Almost surely, 2^28873666992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28873666992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37744012800).

28873666992 is an abundant number, since it is smaller than the sum of its proper divisors (46614358608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28873666992 is a wasteful number, since it uses less digits than its factorization.

28873666992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13570 (or 13564 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 66.

The spelling of 28873666992 in words is "twenty-eight billion, eight hundred seventy-three million, six hundred sixty-six thousand, nine hundred ninety-two".