28304735616 has 192 divisors, whose sum is σ = 86625087120. Its totient is φ = 8840380416.

The previous prime is 28304735567. The next prime is 28304735713. The reversal of 28304735616 is 61653740382.

28304735616 is a `hidden beast` number, since 2 + 83 + 0 + 4 + 7 + 3 + 561 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4559971 + ... + 4566173.

Almost surely, 2^28304735616 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 28304735616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43312543560).

28304735616 is an abundant number, since it is smaller than the sum of its proper divisors (58320351504).

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

28304735616 is a wasteful number, since it uses less digits than its factorization.

28304735616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 28304735616 in words is "twenty-eight billion, three hundred four million, seven hundred thirty-five thousand, six hundred sixteen".