27968233 has 4 divisors (see below), whose sum is σ = 27979588. Its totient is φ = 27956880.

The previous prime is 27968219. The next prime is 27968327. The reversal of 27968233 is 33286972.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 26296384 = 1293^2 + 5128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27968233 is a prime.

It is the 5289-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27968033) by changing a digit.

It is a nontrivial repunit in base 5288.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258 + ... + 7483.

It is an arithmetic number, because the mean of its divisors is an integer number (6994897).

Almost surely, 2^27968233 is an apocalyptic number.

It is an amenable number.

27968233 is a deficient number, since it is larger than the sum of its proper divisors (11355).

27968233 is an equidigital number, since it uses as much as digits as its factorization.

27968233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354.

The product of its digits is 108864, while the sum is 40.

The square root of 27968233 is about 5288.5000709086. The cubic root of 27968233 is about 303.5440164432.

The spelling of 27968233 in words is "twenty-seven million, nine hundred sixty-eight thousand, two hundred thirty-three".