28388863094 has 4 divisors (see below), whose sum is σ = 42583294644. Its totient is φ = 14194431546.

The previous prime is 28388863079. The next prime is 28388863103. The reversal of 28388863094 is 49036888382.

28388863094 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 7097215772 + ... + 7097215775.

It is an arithmetic number, because the mean of its divisors is an integer number (10645823661).

Almost surely, 2^28388863094 is an apocalyptic number.

28388863094 is a deficient number, since it is larger than the sum of its proper divisors (14194431550).

28388863094 is a wasteful number, since it uses less digits than its factorization.

28388863094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14194431549.

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 28388863094 in words is "twenty-eight billion, three hundred eighty-eight million, eight hundred sixty-three thousand, ninety-four".