28821742632 has 96 divisors (see below), whose sum is σ = 78935762880. Its totient is φ = 9499610880.

The previous prime is 28821742603. The next prime is 28821742633. The reversal of 28821742632 is 23624712882.

28821742632 is a `hidden beast` number, since 2 + 8 + 8 + 2 + 1 + 7 + 4 + 2 + 632 = 666.

It is not an unprimeable number, because it can be changed into a prime (28821742633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5641023 + ... + 5646129.

It is an arithmetic number, because the mean of its divisors is an integer number (822247530).

Almost surely, 2^28821742632 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 28821742632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39467881440).

28821742632 is an abundant number, since it is smaller than the sum of its proper divisors (50114020248).

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

28821742632 is a wasteful number, since it uses less digits than its factorization.

28821742632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983 (or 5976 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 28821742632 in words is "twenty-eight billion, eight hundred twenty-one million, seven hundred forty-two thousand, six hundred thirty-two".