28705464703 has 4 divisors (see below), whose sum is σ = 28706270040. Its totient is φ = 28704659368.

The previous prime is 28705464691. The next prime is 28705464707. The reversal of 28705464703 is 30746450782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28705464703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28705464707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346600 + ... + 421357.

It is an arithmetic number, because the mean of its divisors is an integer number (7176567510).

Almost surely, 2^28705464703 is an apocalyptic number.

28705464703 is a deficient number, since it is larger than the sum of its proper divisors (805337).

28705464703 is an equidigital number, since it uses as much as digits as its factorization.

28705464703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805336.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 28705464703 in words is "twenty-eight billion, seven hundred five million, four hundred sixty-four thousand, seven hundred three".