28238549582064 has 80 divisors (see below), whose sum is σ = 73080878622624. Its totient is φ = 9395915980800.

The previous prime is 28238549582041. The next prime is 28238549582149. The reversal of 28238549582064 is 46028594583282.

It is a junction number, because it is equal to n+sod(n) for n = 28238549581986 and 28238549582004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130994752 + ... + 131210144.

Almost surely, 2^{28238549582064} is an apocalyptic number.

28238549582064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28238549582064 is an abundant number, since it is smaller than the sum of its proper divisors (44842329040560).

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

28238549582064 is a wasteful number, since it uses less digits than its factorization.

28238549582064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220306 (or 220300 counting only the distinct ones).

The product of its (nonzero) digits is 265420800, while the sum is 66.

The spelling of 28238549582064 in words is "twenty-eight trillion, two hundred thirty-eight billion, five hundred forty-nine million, five hundred eighty-two thousand, sixty-four".