28055255278 has 16 divisors (see below), whose sum is σ = 44561651904. Its totient is φ = 13201493760.

The previous prime is 28055255233. The next prime is 28055255297. The reversal of 28055255278 is 87255255082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661018 + ... + 702178.

It is an arithmetic number, because the mean of its divisors is an integer number (2785103244).

Almost surely, 2^28055255278 is an apocalyptic number.

28055255278 is a deficient number, since it is larger than the sum of its proper divisors (16506396626).

28055255278 is a wasteful number, since it uses less digits than its factorization.

28055255278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61227.

The product of its (nonzero) digits is 2240000, while the sum is 49.

The spelling of 28055255278 in words is "twenty-eight billion, fifty-five million, two hundred fifty-five thousand, two hundred seventy-eight".