28322504832 has 128 divisors (see below), whose sum is σ = 79800638400. Its totient is φ = 8869478400.

The previous prime is 28322504783. The next prime is 28322504839. The reversal of 28322504832 is 23840522382.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28322504839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3919719 + ... + 3926937.

Almost surely, 2^28322504832 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 28322504832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39900319200).

28322504832 is an abundant number, since it is smaller than the sum of its proper divisors (51478133568).

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

28322504832 is a wasteful number, since it uses less digits than its factorization.

28322504832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7854 (or 7842 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 28322504832 in words is "twenty-eight billion, three hundred twenty-two million, five hundred four thousand, eight hundred thirty-two".