28281356835 has 16 divisors (see below), whose sum is σ = 47631759360. Its totient is φ = 14289527520.

The previous prime is 28281356833. The next prime is 28281356849. The reversal of 28281356835 is 53865318282.

It is not a de Polignac number, because 28281356835 - 2¹ = 28281356833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28281356833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49616131 + ... + 49616700.

It is an arithmetic number, because the mean of its divisors is an integer number (2976984960).

Almost surely, 2^28281356835 is an apocalyptic number.

28281356835 is a deficient number, since it is larger than the sum of its proper divisors (19350402525).

28281356835 is a wasteful number, since it uses less digits than its factorization.

28281356835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99232858.

The product of its digits is 2764800, while the sum is 51.

The spelling of 28281356835 in words is "twenty-eight billion, two hundred eighty-one million, three hundred fifty-six thousand, eight hundred thirty-five".