28170127 has 2 divisors, whose sum is σ = 28170128. Its totient is φ = 28170126.

The previous prime is 28170119. The next prime is 28170133. The reversal of 28170127 is 72107182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28170127 - 2³ = 28170119 is a prime.

It is a super-2 number, since 2×28170127² = 1587112110392258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28170095 and 28170104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28170187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14085063 + 14085064.

It is an arithmetic number, because the mean of its divisors is an integer number (14085064).

Almost surely, 2^28170127 is an apocalyptic number.

28170127 is a deficient number, since it is larger than the sum of its proper divisors (1).

28170127 is an equidigital number, since it uses as much as digits as its factorization.

28170127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 28170127 is about 5307.5537679801. The cubic root of 28170127 is about 304.2726626600.

The spelling of 28170127 in words is "twenty-eight million, one hundred seventy thousand, one hundred twenty-seven".