28203245568 has 168 divisors, whose sum is σ = 82819865856. Its totient is φ = 9245491200.

The previous prime is 28203245509. The next prime is 28203245569. The reversal of 28203245568 is 86554230282.

28203245568 is a `hidden beast` number, since 2 + 82 + 0 + 3 + 2 + 4 + 5 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28203245569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4494273 + ... + 4500543.

It is an arithmetic number, because the mean of its divisors is an integer number (492975392).

Almost surely, 2^28203245568 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 28203245568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41409932928).

28203245568 is an abundant number, since it is smaller than the sum of its proper divisors (54616620288).

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

28203245568 is an equidigital number, since it uses as much as digits as its factorization.

28203245568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364 (or 6337 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 28203245568 in words is "twenty-eight billion, two hundred three million, two hundred forty-five thousand, five hundred sixty-eight".