28587322137 has 16 divisors (see below), whose sum is σ = 41736150720. Its totient is φ = 17261236800.

The previous prime is 28587322121. The next prime is 28587322139. The reversal of 28587322137 is 73122378582.

It is not a de Polignac number, because 28587322137 - 2⁴ = 28587322121 is a prime.

It is a super-2 number, since 2×28587322137² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28587322139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1601314 + ... + 1619067.

It is an arithmetic number, because the mean of its divisors is an integer number (2608509420).

Almost surely, 2^28587322137 is an apocalyptic number.

It is an amenable number.

28587322137 is a deficient number, since it is larger than the sum of its proper divisors (13148828583).

28587322137 is a wasteful number, since it uses less digits than its factorization.

28587322137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220664.

The product of its digits is 1128960, while the sum is 48.

The spelling of 28587322137 in words is "twenty-eight billion, five hundred eighty-seven million, three hundred twenty-two thousand, one hundred thirty-seven".