28282216032 has 144 divisors (see below), whose sum is σ = 92776948992. Its totient is φ = 8005052160.

The previous prime is 28282216013. The next prime is 28282216033. The reversal of 28282216032 is 23061228282.

28282216032 is a `hidden beast` number, since 2 + 8 + 28 + 2 + 21 + 603 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28282216033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150157 + ... + 281267.

It is an arithmetic number, because the mean of its divisors is an integer number (644284368).

Almost surely, 2^28282216032 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 28282216032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46388474496).

28282216032 is an abundant number, since it is smaller than the sum of its proper divisors (64494732960).

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

28282216032 is a wasteful number, since it uses less digits than its factorization.

28282216032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131241 (or 131230 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 28282216032 in words is "twenty-eight billion, two hundred eighty-two million, two hundred sixteen thousand, thirty-two".