28018190727 has 6 divisors (see below), whose sum is σ = 40470719952. Its totient is φ = 18678793812.

The previous prime is 28018190713. The next prime is 28018190743. The reversal of 28018190727 is 72709181082.

It is not a de Polignac number, because 28018190727 - 2¹² = 28018186631 is a prime.

It is a super-2 number, since 2×28018190727² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28018190227) 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, 1556566143 + ... + 1556566160.

It is an arithmetic number, because the mean of its divisors is an integer number (6745119992).

Almost surely, 2^28018190727 is an apocalyptic number.

28018190727 is a deficient number, since it is larger than the sum of its proper divisors (12452529225).

28018190727 is a wasteful number, since it uses less digits than its factorization.

28018190727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113132309 (or 3113132306 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The spelling of 28018190727 in words is "twenty-eight billion, eighteen million, one hundred ninety thousand, seven hundred twenty-seven".