28663456068 has 120 divisors (see below), whose sum is σ = 80807811392. Its totient is φ = 8807299776.

The previous prime is 28663455983. The next prime is 28663456091. The reversal of 28663456068 is 86065436682.

It is a happy number.

28663456068 is a `hidden beast` number, since 28 + 6 + 6 + 3 + 4 + 5 + 606 + 8 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3310521 + ... + 3319167.

Almost surely, 2^28663456068 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 28663456068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40403905696).

28663456068 is an abundant number, since it is smaller than the sum of its proper divisors (52144355324).

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

28663456068 is a wasteful number, since it uses less digits than its factorization.

28663456068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 28663456068 in words is "twenty-eight billion, six hundred sixty-three million, four hundred fifty-six thousand, sixty-eight".