28455592705 has 4 divisors (see below), whose sum is σ = 34146711252. Its totient is φ = 22764474160.

The previous prime is 28455592699. The next prime is 28455592723. The reversal of 28455592705 is 50729555482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20727072961 + 7728519744 = 143969^2 + 87912^2 .

It is not a de Polignac number, because 28455592705 - 2⁷ = 28455592577 is a prime.

It is a Duffinian 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, 2845559266 + ... + 2845559275.

It is an arithmetic number, because the mean of its divisors is an integer number (8536677813).

Almost surely, 2^28455592705 is an apocalyptic number.

It is an amenable number.

28455592705 is a deficient number, since it is larger than the sum of its proper divisors (5691118547).

28455592705 is an equidigital number, since it uses as much as digits as its factorization.

28455592705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691118546.

The product of its (nonzero) digits is 5040000, while the sum is 52.

The spelling of 28455592705 in words is "twenty-eight billion, four hundred fifty-five million, five hundred ninety-two thousand, seven hundred five".