28055863892 has 24 divisors (see below), whose sum is σ = 56311429440. Its totient is φ = 11981148480.

The previous prime is 28055863811. The next prime is 28055863897. The reversal of 28055863892 is 29836855082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055863897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775042 + ... + 1790777.

It is an arithmetic number, because the mean of its divisors is an integer number (2346309560).

Almost surely, 2^28055863892 is an apocalyptic number.

It is an amenable number.

28055863892 is an abundant number, since it is smaller than the sum of its proper divisors (28255565548).

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

28055863892 is a wasteful number, since it uses less digits than its factorization.

28055863892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566111 (or 3566109 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 28055863892 in words is "twenty-eight billion, fifty-five million, eight hundred sixty-three thousand, eight hundred ninety-two".