28287285696 has 112 divisors (see below), whose sum is σ = 83201459200. Its totient is φ = 9424325376.

The previous prime is 28287285673. The next prime is 28287285707. The reversal of 28287285696 is 69658278282.

28287285696 is a `hidden beast` number, since 28 + 28 + 7 + 28 + 569 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5629041 + ... + 5634063.

Almost surely, 2^28287285696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28287285696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41600729600).

28287285696 is an abundant number, since it is smaller than the sum of its proper divisors (54914173504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28287285696 is a wasteful number, since it uses less digits than its factorization.

28287285696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303 (or 8287 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 28287285696 in words is "twenty-eight billion, two hundred eighty-seven million, two hundred eighty-five thousand, six hundred ninety-six".