28686233268683 has 32 divisors (see below), whose sum is σ = 30985871431680. Its totient is φ = 26494017960960.

The previous prime is 28686233268673. The next prime is 28686233268713. The reversal of 28686233268683 is 38686233268682.

It is a cyclic number.

It is not a de Polignac number, because 28686233268683 - 2⁴² = 24288186757579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28686233268673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23272910 + ... + 24474492.

It is an arithmetic number, because the mean of its divisors is an integer number (968308482240).

Almost surely, 2^{28686233268683} is an apocalyptic number.

28686233268683 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28686233268683 is a deficient number, since it is larger than the sum of its proper divisors (2299638162997).

28686233268683 is a wasteful number, since it uses less digits than its factorization.

28686233268683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201979.

The product of its digits is 1146617856, while the sum is 71.

Subtracting 28686233268683 from its reverse (38686233268682), we obtain a palindrome (9999999999999).

The spelling of 28686233268683 in words is "twenty-eight trillion, six hundred eighty-six billion, two hundred thirty-three million, two hundred sixty-eight thousand, six hundred eighty-three".