28166027 has 2 divisors, whose sum is σ = 28166028. Its totient is φ = 28166026.

The previous prime is 28166023. The next prime is 28166077. The reversal of 28166027 is 72066182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28166027 - 2² = 28166023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28165984 and 28166002.

It is not a weakly prime, because it can be changed into another prime (28166023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14083013 + 14083014.

It is an arithmetic number, because the mean of its divisors is an integer number (14083014).

Almost surely, 2^28166027 is an apocalyptic number.

28166027 is a deficient number, since it is larger than the sum of its proper divisors (1).

28166027 is an equidigital number, since it uses as much as digits as its factorization.

28166027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28166027 is about 5307.1675119597. The cubic root of 28166027 is about 304.2579002316.

The spelling of 28166027 in words is "twenty-eight million, one hundred sixty-six thousand, twenty-seven".