28055777894 has 8 divisors (see below), whose sum is σ = 42084381360. Its totient is φ = 14027650776.

The previous prime is 28055777863. The next prime is 28055777903. The reversal of 28055777894 is 49877755082.

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

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 3 ways as a sum of consecutive naturals, for example, 147647 + ... + 279125.

It is an arithmetic number, because the mean of its divisors is an integer number (5260547670).

Almost surely, 2^28055777894 is an apocalyptic number.

28055777894 is a deficient number, since it is larger than the sum of its proper divisors (14028603466).

28055777894 is a wasteful number, since it uses less digits than its factorization.

28055777894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238174.

The product of its (nonzero) digits is 39513600, while the sum is 62.

The spelling of 28055777894 in words is "twenty-eight billion, fifty-five million, seven hundred seventy-seven thousand, eight hundred ninety-four".