28366067808 has 480 divisors, whose sum is σ = 99307809216. Its totient is φ = 7853801472.

The previous prime is 28366067753. The next prime is 28366067843. The reversal of 28366067808 is 80876066382.

It is a happy number.

28366067808 is a `hidden beast` number, since 28 + 3 + 6 + 606 + 7 + 8 + 0 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13174060 + ... + 13176212.

Almost surely, 2^28366067808 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 28366067808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49653904608).

28366067808 is an abundant number, since it is smaller than the sum of its proper divisors (70941741408).

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

28366067808 is a wasteful number, since it uses less digits than its factorization.

28366067808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 28366067808 in words is "twenty-eight billion, three hundred sixty-six million, sixty-seven thousand, eight hundred eight".