28337128272 has 120 divisors (see below), whose sum is σ = 82850197248. Its totient is φ = 9030758400.

The previous prime is 28337128201. The next prime is 28337128289. The reversal of 28337128272 is 27282173382.

28337128272 is a `hidden beast` number, since 2 + 8 + 3 + 371 + 2 + 8 + 272 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 332272 + ... + 408752.

Almost surely, 2^28337128272 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 28337128272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41425098624).

28337128272 is an abundant number, since it is smaller than the sum of its proper divisors (54513068976).

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

28337128272 is a wasteful number, since it uses less digits than its factorization.

28337128272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76609 (or 76600 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The spelling of 28337128272 in words is "twenty-eight billion, three hundred thirty-seven million, one hundred twenty-eight thousand, two hundred seventy-two".