28153044728 has 16 divisors (see below), whose sum is σ = 52788782760. Its totient is φ = 14076036000.

The previous prime is 28153044721. The next prime is 28153044739. The reversal of 28153044728 is 82744035182.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28153044721) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 342878 + ... + 416978.

Almost surely, 2^28153044728 is an apocalyptic number.

It is an amenable number.

28153044728 is a deficient number, since it is larger than the sum of its proper divisors (24635738032).

28153044728 is a wasteful number, since it uses less digits than its factorization.

28153044728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121598 (or 121594 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 28153044728 in words is "twenty-eight billion, one hundred fifty-three million, forty-four thousand, seven hundred twenty-eight".