28263603216 has 320 divisors, whose sum is σ = 83594649600. Its totient is φ = 8186572800.

The previous prime is 28263603187. The next prime is 28263603287. The reversal of 28263603216 is 61230636282.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42888295 + ... + 42888953.

It is an arithmetic number, because the mean of its divisors is an integer number (261233280).

Almost surely, 2^28263603216 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 28263603216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41797324800).

28263603216 is an abundant number, since it is smaller than the sum of its proper divisors (55331046384).

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

28263603216 is a wasteful number, since it uses less digits than its factorization.

28263603216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 28263603216 in words is "twenty-eight billion, two hundred sixty-three million, six hundred three thousand, two hundred sixteen".