28655244288 has 792 divisors, whose sum is σ = 102199013280. Its totient is φ = 7942717440.

The previous prime is 28655244157. The next prime is 28655244337. The reversal of 28655244288 is 88244255682.

28655244288 is a `hidden beast` number, since 2 + 8 + 6 + 552 + 4 + 4 + 2 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is a super-2 number, since 2×28655244288² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (9830400) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 988111858 + ... + 988111886.

Almost surely, 2^28655244288 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 28655244288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51099506640).

28655244288 is an abundant number, since it is smaller than the sum of its proper divisors (73543768992).

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

28655244288 is a wasteful number, since it uses less digits than its factorization.

28655244288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 64 counting only the distinct ones).

The product of its digits is 9830400, while the sum is 54.

The spelling of 28655244288 in words is "twenty-eight billion, six hundred fifty-five million, two hundred forty-four thousand, two hundred eighty-eight".