28717028586 has 12 divisors (see below), whose sum is σ = 62220228642. Its totient is φ = 9572342856.

The previous prime is 28717028581. The next prime is 28717028611. The reversal of 28717028586 is 68582071782.

28717028586 is a `hidden beast` number, since 28 + 7 + 17 + 0 + 28 + 586 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27895346361 + 821682225 = 167019^2 + 28665^2 .

It is not an unprimeable number, because it can be changed into a prime (28717028581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 797695221 + ... + 797695256.

Almost surely, 2^28717028586 is an apocalyptic number.

28717028586 is an abundant number, since it is smaller than the sum of its proper divisors (33503200056).

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

28717028586 is a wasteful number, since it uses less digits than its factorization.

28717028586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595390485 (or 1595390482 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 28717028586 in words is "twenty-eight billion, seven hundred seventeen million, twenty-eight thousand, five hundred eighty-six".