28128342584 has 16 divisors (see below), whose sum is σ = 52742560320. Its totient is φ = 14063659840.

The previous prime is 28128342581. The next prime is 28128342589. The reversal of 28128342584 is 48524382182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28128342581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276332 + ... + 364164.

It is an arithmetic number, because the mean of its divisors is an integer number (3296410020).

Almost surely, 2^28128342584 is an apocalyptic number.

It is an amenable number.

28128342584 is a deficient number, since it is larger than the sum of its proper divisors (24614217736).

28128342584 is a wasteful number, since it uses less digits than its factorization.

28128342584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127870 (or 127866 counting only the distinct ones).

The product of its digits is 983040, while the sum is 47.

The spelling of 28128342584 in words is "twenty-eight billion, one hundred twenty-eight million, three hundred forty-two thousand, five hundred eighty-four".