28064604768 has 192 divisors, whose sum is σ = 82024125120. Its totient is φ = 8360755200.

The previous prime is 28064604767. The next prime is 28064604769. The reversal of 28064604768 is 86740646082.

It is an interprime number because it is at equal distance from previous prime (28064604767) and next prime (28064604769).

It is a super-3 number, since 3×28064604768³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 28064604768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064604767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2882148 + ... + 2891868.

It is an arithmetic number, because the mean of its divisors is an integer number (427208985).

Almost surely, 2^28064604768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28064604768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41012062560).

28064604768 is an abundant number, since it is smaller than the sum of its proper divisors (53959520352).

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

28064604768 is a wasteful number, since it uses less digits than its factorization.

28064604768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9841 (or 9833 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 28064604768 in words is "twenty-eight billion, sixty-four million, six hundred four thousand, seven hundred sixty-eight".