27728588867 has 8 divisors (see below), whose sum is σ = 31693046112. Its totient is φ = 23764939200.

The previous prime is 27728588857. The next prime is 27728588869. The reversal of 27728588867 is 76888582772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27728588867 - 2²⁶ = 27661480003 is a prime.

It is a super-3 number, since 3×27728588867³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27728588797 and 27728588806.

It is not an unprimeable number, because it can be changed into a prime (27728588869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126434 + ... + 267287.

It is an arithmetic number, because the mean of its divisors is an integer number (3961630764).

Almost surely, 2^27728588867 is an apocalyptic number.

27728588867 is a deficient number, since it is larger than the sum of its proper divisors (3964457245).

27728588867 is a wasteful number, since it uses less digits than its factorization.

27728588867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403789.

The product of its digits is 168591360, while the sum is 68.

The spelling of 27728588867 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred eighty-eight thousand, eight hundred sixty-seven".