28055884815 has 32 divisors (see below), whose sum is σ = 57002434560. Its totient is φ = 12825546912.

The previous prime is 28055884807. The next prime is 28055884867. The reversal of 28055884815 is 51848855082.

28055884815 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 588 + 48 + 15 = 666.

It is not a de Polignac number, because 28055884815 - 2³ = 28055884807 is a prime.

It is a super-3 number, since 3×28055884815³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14843439 + ... + 14845328.

It is an arithmetic number, because the mean of its divisors is an integer number (1781326080).

Almost surely, 2^28055884815 is an apocalyptic number.

28055884815 is an abundant number, since it is smaller than the sum of its proper divisors (28946549745).

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

28055884815 is a wasteful number, since it uses less digits than its factorization.

28055884815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29688788 (or 29688782 counting only the distinct ones).

The product of its (nonzero) digits is 4096000, while the sum is 54.

The spelling of 28055884815 in words is "twenty-eight billion, fifty-five million, eight hundred eighty-four thousand, eight hundred fifteen".