28487585187 has 12 divisors (see below), whose sum is σ = 41168071464. Its totient is φ = 18982798560.

The previous prime is 28487585149. The next prime is 28487585197. The reversal of 28487585187 is 78158578482.

28487585187 is a `hidden beast` number, since 2 + 8 + 48 + 7 + 585 + 1 + 8 + 7 = 666.

It is not a de Polignac number, because 28487585187 - 2⁶ = 28487585123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28487585197) 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 11 ways as a sum of consecutive naturals, for example, 723498 + ... + 761855.

It is an arithmetic number, because the mean of its divisors is an integer number (3430672622).

Almost surely, 2^28487585187 is an apocalyptic number.

28487585187 is a deficient number, since it is larger than the sum of its proper divisors (12680486277).

28487585187 is a wasteful number, since it uses less digits than its factorization.

28487585187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487490 (or 1487487 counting only the distinct ones).

The product of its digits is 40140800, while the sum is 63.

The spelling of 28487585187 in words is "twenty-eight billion, four hundred eighty-seven million, five hundred eighty-five thousand, one hundred eighty-seven".