28863205338198 has 384 divisors, whose sum is σ = 78822336466944. Its totient is φ = 6950835091200.

The previous prime is 28863205338161. The next prime is 28863205338199. The reversal of 28863205338198 is 89183350236882.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28863205338199) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 327162313 + ... + 327250523.

It is an arithmetic number, because the mean of its divisors is an integer number (205266501216).

Almost surely, 2^{28863205338198} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28863205338198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39411168233472).

28863205338198 is an abundant number, since it is smaller than the sum of its proper divisors (49959131128746).

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

28863205338198 is a wasteful number, since it uses less digits than its factorization.

28863205338198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88400 (or 88393 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 66.

The spelling of 28863205338198 in words is "twenty-eight trillion, eight hundred sixty-three billion, two hundred five million, three hundred thirty-eight thousand, one hundred ninety-eight".