28805414305 has 8 divisors (see below), whose sum is σ = 34766304552. Its totient is φ = 22911126528.

The previous prime is 28805414257. The next prime is 28805414311. The reversal of 28805414305 is 50341450882.

It can be written as a sum of positive squares in 4 ways, for example, as 6016794624 + 22788619681 = 77568^2 + 150959^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28805414305 - 2⁷ = 28805414177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16649664 + ... + 16651393.

It is an arithmetic number, because the mean of its divisors is an integer number (4345788069).

Almost surely, 2^28805414305 is an apocalyptic number.

It is an amenable number.

28805414305 is a deficient number, since it is larger than the sum of its proper divisors (5960890247).

28805414305 is a wasteful number, since it uses less digits than its factorization.

28805414305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33301235.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 28805414305 in words is "twenty-eight billion, eight hundred five million, four hundred fourteen thousand, three hundred five".