28055176478 has 96 divisors (see below), whose sum is σ = 50702047200. Its totient is φ = 11604612096.

The previous prime is 28055176469. The next prime is 28055176493. The reversal of 28055176478 is 87467155082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88501976 + ... + 88502292.

It is an arithmetic number, because the mean of its divisors is an integer number (528146325).

Almost surely, 2^28055176478 is an apocalyptic number.

28055176478 is a deficient number, since it is larger than the sum of its proper divisors (22646870722).

28055176478 is a wasteful number, since it uses less digits than its factorization.

28055176478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 28055176478 in words is "twenty-eight billion, fifty-five million, one hundred seventy-six thousand, four hundred seventy-eight".