28287662305 has 16 divisors (see below), whose sum is σ = 39373534080. Its totient is φ = 19107741312.

The previous prime is 28287662269. The next prime is 28287662311. The reversal of 28287662305 is 50326678282.

It is a cyclic number.

It is not a de Polignac number, because 28287662305 - 2¹¹ = 28287660257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6029140 + ... + 6033829.

It is an arithmetic number, because the mean of its divisors is an integer number (2460845880).

Almost surely, 2^28287662305 is an apocalyptic number.

It is an amenable number.

28287662305 is a deficient number, since it is larger than the sum of its proper divisors (11085871775).

28287662305 is a wasteful number, since it uses less digits than its factorization.

28287662305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12063048.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 28287662305 in words is "twenty-eight billion, two hundred eighty-seven million, six hundred sixty-two thousand, three hundred five".