28331549568 has 192 divisors, whose sum is σ = 93299481600. Its totient is φ = 8083805184.

The previous prime is 28331549551. The next prime is 28331549627. The reversal of 28331549568 is 86594513382.

28331549568 is a `hidden beast` number, since 2 + 8 + 3 + 31 + 5 + 49 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7408905 + ... + 7412727.

It is an arithmetic number, because the mean of its divisors is an integer number (485934800).

Almost surely, 2^28331549568 is an apocalyptic number.

28331549568 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 28331549568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46649740800).

28331549568 is an abundant number, since it is smaller than the sum of its proper divisors (64967932032).

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

28331549568 is a wasteful number, since it uses less digits than its factorization.

28331549568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769 (or 4754 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 28331549568 in words is "twenty-eight billion, three hundred thirty-one million, five hundred forty-nine thousand, five hundred sixty-eight".