28918355086 has 4 divisors (see below), whose sum is σ = 43377532632. Its totient is φ = 14459177542.

The previous prime is 28918355083. The next prime is 28918355093. The reversal of 28918355086 is 68055381982.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28918355083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7229588770 + ... + 7229588773.

It is an arithmetic number, because the mean of its divisors is an integer number (10844383158).

Almost surely, 2^28918355086 is an apocalyptic number.

28918355086 is a deficient number, since it is larger than the sum of its proper divisors (14459177546).

28918355086 is a wasteful number, since it uses less digits than its factorization.

28918355086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14459177545.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 28918355086 in words is "twenty-eight billion, nine hundred eighteen million, three hundred fifty-five thousand, eighty-six".