28360642816 has 72 divisors (see below), whose sum is σ = 61795843200. Its totient is φ = 12883077120.

The previous prime is 28360642813. The next prime is 28360642823. The reversal of 28360642816 is 61824606382.

It is not an unprimeable number, because it can be changed into a prime (28360642811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8781490 + ... + 8784718.

It is an arithmetic number, because the mean of its divisors is an integer number (858275600).

Almost surely, 2^28360642816 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 28360642816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30897921600).

28360642816 is an abundant number, since it is smaller than the sum of its proper divisors (33435200384).

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

28360642816 is a wasteful number, since it uses less digits than its factorization.

28360642816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375 (or 6361 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

It can be divided in two parts, 28360 and 642816, that added together give a palindrome (671176).

The spelling of 28360642816 in words is "twenty-eight billion, three hundred sixty million, six hundred forty-two thousand, eight hundred sixteen".