28347565198 has 4 divisors (see below), whose sum is σ = 42521347800. Its totient is φ = 14173782598.

The previous prime is 28347565193. The next prime is 28347565199. The reversal of 28347565198 is 89156574382.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28347565193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7086891298 + ... + 7086891301.

It is an arithmetic number, because the mean of its divisors is an integer number (10630336950).

Almost surely, 2^28347565198 is an apocalyptic number.

28347565198 is a deficient number, since it is larger than the sum of its proper divisors (14173782602).

28347565198 is a wasteful number, since it uses less digits than its factorization.

28347565198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14173782601.

The product of its digits is 14515200, while the sum is 58.

The spelling of 28347565198 in words is "twenty-eight billion, three hundred forty-seven million, five hundred sixty-five thousand, one hundred ninety-eight".