28282443505728 has 56 divisors (see below), whose sum is σ = 76057363475520. Its totient is φ = 9272932293120.

The previous prime is 28282443505709. The next prime is 28282443505747. The reversal of 28282443505728 is 82750534428282.

It is an interprime number because it is at equal distance from previous prime (28282443505709) and next prime (28282443505747).

It is a super-2 number, since 2×28282443505728² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207401348 + ... + 1207424771.

It is an arithmetic number, because the mean of its divisors is an integer number (1358167204920).

Almost surely, 2^{28282443505728} is an apocalyptic number.

It is an amenable number.

28282443505728 is an abundant number, since it is smaller than the sum of its proper divisors (47774919969792).

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

28282443505728 is a wasteful number, since it uses less digits than its factorization.

28282443505728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414826195 (or 2414826185 counting only the distinct ones).

The product of its (nonzero) digits is 68812800, while the sum is 60.

The spelling of 28282443505728 in words is "twenty-eight trillion, two hundred eighty-two billion, four hundred forty-three million, five hundred five thousand, seven hundred twenty-eight".