28666849198 has 8 divisors (see below), whose sum is σ = 46307987208. Its totient is φ = 13230853464.

The previous prime is 28666849193. The next prime is 28666849231. The reversal of 28666849198 is 89194866682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28666849193) 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, 551285536 + ... + 551285587.

It is an arithmetic number, because the mean of its divisors is an integer number (5788498401).

Almost surely, 2^28666849198 is an apocalyptic number.

28666849198 is a deficient number, since it is larger than the sum of its proper divisors (17641138010).

28666849198 is a wasteful number, since it uses less digits than its factorization.

28666849198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102571138.

The product of its digits is 71663616, while the sum is 67.

The spelling of 28666849198 in words is "twenty-eight billion, six hundred sixty-six million, eight hundred forty-nine thousand, one hundred ninety-eight".