28587274713 has 12 divisors (see below), whose sum is σ = 41295123220. Its totient is φ = 19057078656.

The previous prime is 28587274691. The next prime is 28587274717. The reversal of 28587274713 is 31747278582.

28587274713 is a `hidden beast` number, since 2 + 8 + 587 + 2 + 7 + 47 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24576205824 + 4011068889 = 156768^2 + 63333^2 .

It is not a de Polignac number, because 28587274713 - 2¹² = 28587270617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28587274713.

It is not an unprimeable number, because it can be changed into a prime (28587274717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91053 + ... + 255861.

Almost surely, 2^28587274713 is an apocalyptic number.

It is an amenable number.

28587274713 is a deficient number, since it is larger than the sum of its proper divisors (12707848507).

28587274713 is a wasteful number, since it uses less digits than its factorization.

28587274713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184088 (or 184085 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 54.

The spelling of 28587274713 in words is "twenty-eight billion, five hundred eighty-seven million, two hundred seventy-four thousand, seven hundred thirteen".