28666327 has 2 divisors, whose sum is σ = 28666328. Its totient is φ = 28666326.

The previous prime is 28666283. The next prime is 28666333. The reversal of 28666327 is 72366682.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28666327 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28666327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28666357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14333163 + 14333164.

It is an arithmetic number, because the mean of its divisors is an integer number (14333164).

Almost surely, 2^28666327 is an apocalyptic number.

28666327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28666327 is an equidigital number, since it uses as much as digits as its factorization.

28666327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 28666327 is about 5354.0944145579. The cubic root of 28666327 is about 306.0488017912.

The spelling of 28666327 in words is "twenty-eight million, six hundred sixty-six thousand, three hundred twenty-seven".