28686063 has 16 divisors (see below), whose sum is σ = 44894720. Its totient is φ = 15948576.

The previous prime is 28686061. The next prime is 28686071. The reversal of 28686063 is 36068682.

It is not a de Polignac number, because 28686063 - 2¹ = 28686061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28686061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17683 + ... + 19236.

It is an arithmetic number, because the mean of its divisors is an integer number (2805920).

Almost surely, 2^28686063 is an apocalyptic number.

28686063 is a deficient number, since it is larger than the sum of its proper divisors (16208657).

28686063 is a wasteful number, since it uses less digits than its factorization.

28686063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36966.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 28686063 is about 5355.9371728951. The cubic root of 28686063 is about 306.1190211525.

The spelling of 28686063 in words is "twenty-eight million, six hundred eighty-six thousand, sixty-three".