28566752928 has 384 divisors, whose sum is σ = 95277772800. Its totient is φ = 7306371072.

The previous prime is 28566752923. The next prime is 28566752933. The reversal of 28566752928 is 82925766582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28566752923) and next prime (28566752933).

It is not an unprimeable number, because it can be changed into a prime (28566752923) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26135550 + ... + 26136642.

It is an arithmetic number, because the mean of its divisors is an integer number (248119200).

Almost surely, 2^28566752928 is an apocalyptic number.

28566752928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28566752928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47638886400).

28566752928 is an abundant number, since it is smaller than the sum of its proper divisors (66711019872).

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

28566752928 is a wasteful number, since it uses less digits than its factorization.

28566752928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1236 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 60.

The spelling of 28566752928 in words is "twenty-eight billion, five hundred sixty-six million, seven hundred fifty-two thousand, nine hundred twenty-eight".