28055884866 has 8 divisors (see below), whose sum is σ = 56111769744. Its totient is φ = 9351961620.

The previous prime is 28055884807. The next prime is 28055884867. The reversal of 28055884866 is 66848855082.

It is a sphenic number, since it is the product of 3 distinct primes.

28055884866 is an admirable number.

It is a super-2 number, since 2×28055884866² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28055884867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2337990400 + ... + 2337990411.

It is an arithmetic number, because the mean of its divisors is an integer number (7013971218).

Almost surely, 2^28055884866 is an apocalyptic number.

28055884866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28055884866 is a wasteful number, since it uses less digits than its factorization.

28055884866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675980816.

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 28055884866 in words is "twenty-eight billion, fifty-five million, eight hundred eighty-four thousand, eight hundred sixty-six".