28152564687 has 60 divisors (see below), whose sum is σ = 45611214264. Its totient is φ = 17297167680.

The previous prime is 28152564677. The next prime is 28152564721. The reversal of 28152564687 is 78646525182.

28152564687 is a `hidden beast` number, since 2 + 8 + 15 + 2 + 564 + 68 + 7 = 666.

It is not a de Polignac number, because 28152564687 - 2¹⁵ = 28152531919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152564607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 11675512 + ... + 11677922.

Almost surely, 2^28152564687 is an apocalyptic number.

28152564687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28152564687 is a deficient number, since it is larger than the sum of its proper divisors (17458649577).

28152564687 is a wasteful number, since it uses less digits than its factorization.

28152564687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302 (or 3280 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 28152564687 in words is "twenty-eight billion, one hundred fifty-two million, five hundred sixty-four thousand, six hundred eighty-seven".