28685274476 has 6 divisors (see below), whose sum is σ = 50199230340. Its totient is φ = 14342637236.

The previous prime is 28685274469. The next prime is 28685274517. The reversal of 28685274476 is 67447258682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3585659306 + ... + 3585659313.

It is an arithmetic number, because the mean of its divisors is an integer number (8366538390).

Almost surely, 2^28685274476 is an apocalyptic number.

It is an amenable number.

28685274476 is a deficient number, since it is larger than the sum of its proper divisors (21513955864).

28685274476 is a wasteful number, since it uses less digits than its factorization.

28685274476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171318623 (or 7171318621 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 59.

The spelling of 28685274476 in words is "twenty-eight billion, six hundred eighty-five million, two hundred seventy-four thousand, four hundred seventy-six".