28896559344 has 120 divisors (see below), whose sum is σ = 83110238640. Its totient is φ = 9367335936.

The previous prime is 28896559343. The next prime is 28896559357. The reversal of 28896559344 is 44395569882.

28896559344 is a `hidden beast` number, since 288 + 9 + 6 + 5 + 5 + 9 + 344 = 666.

It is a super-2 number, since 2×28896559344² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28896559343) 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, 1432722 + ... + 1452750.

It is an arithmetic number, because the mean of its divisors is an integer number (692585322).

Almost surely, 2^28896559344 is an apocalyptic number.

28896559344 is a gapful number since it is divisible by the number (24) 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 28896559344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41555119320).

28896559344 is an abundant number, since it is smaller than the sum of its proper divisors (54213679296).

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

28896559344 is a wasteful number, since it uses less digits than its factorization.

28896559344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20319 (or 20310 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 28896559344 in words is "twenty-eight billion, eight hundred ninety-six million, five hundred fifty-nine thousand, three hundred forty-four".