28766871198 has 96 divisors (see below), whose sum is σ = 73703631456. Its totient is φ = 8330646528.

The previous prime is 28766871187. The next prime is 28766871227. The reversal of 28766871198 is 89117866782.

It is a Curzon number.

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, 26511 + ... + 241322.

It is an arithmetic number, because the mean of its divisors is an integer number (767746161).

Almost surely, 2^28766871198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28766871198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36851815728).

28766871198 is an abundant number, since it is smaller than the sum of its proper divisors (44936760258).

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

28766871198 is a wasteful number, since it uses less digits than its factorization.

28766871198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267880 (or 267868 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 63.

The spelling of 28766871198 in words is "twenty-eight billion, seven hundred sixty-six million, eight hundred seventy-one thousand, one hundred ninety-eight".