28634381824 has 80 divisors (see below), whose sum is σ = 57750576048. Its totient is φ = 14183350272.

The previous prime is 28634381819. The next prime is 28634381857. The reversal of 28634381824 is 42818343682.

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 7 ways as a sum of consecutive naturals, for example, 31569979 + ... + 31570885.

Almost surely, 2^28634381824 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 28634381824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28875288024).

28634381824 is an abundant number, since it is smaller than the sum of its proper divisors (29116194224).

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

28634381824 is an equidigital number, since it uses as much as digits as its factorization.

28634381824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1419 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The spelling of 28634381824 in words is "twenty-eight billion, six hundred thirty-four million, three hundred eighty-one thousand, eight hundred twenty-four".