28627048305 has 12 divisors (see below), whose sum is σ = 49620217140. Its totient is φ = 15267759072.

The previous prime is 28627048267. The next prime is 28627048319. The reversal of 28627048305 is 50384072682.

28627048305 is a `hidden beast` number, since 286 + 27 + 0 + 48 + 305 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21703477041 + 6923571264 = 147321^2 + 83208^2 .

It is not a de Polignac number, because 28627048305 - 2²⁴ = 28610271089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 636156629 = 28627048305 / (2 + 8 + 6 + 2 + 7 + 0 + 4 + 8 + 3 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318078270 + ... + 318078359.

It is an arithmetic number, because the mean of its divisors is an integer number (4135018095).

Almost surely, 2^28627048305 is an apocalyptic number.

It is an amenable number.

28627048305 is a deficient number, since it is larger than the sum of its proper divisors (20993168835).

28627048305 is a wasteful number, since it uses less digits than its factorization.

28627048305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636156640 (or 636156637 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 28627048305 in words is "twenty-eight billion, six hundred twenty-seven million, forty-eight thousand, three hundred five".