28183871 has 2 divisors, whose sum is σ = 28183872. Its totient is φ = 28183870.

The previous prime is 28183861. The next prime is 28183889. The reversal of 28183871 is 17838182.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28183871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28183801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14091935 + 14091936.

It is an arithmetic number, because the mean of its divisors is an integer number (14091936).

Almost surely, 2^28183871 is an apocalyptic number.

28183871 is a deficient number, since it is larger than the sum of its proper divisors (1).

28183871 is an equidigital number, since it uses as much as digits as its factorization.

28183871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 38.

The square root of 28183871 is about 5308.8483685259. The cubic root of 28183871 is about 304.3221387539.

The spelling of 28183871 in words is "twenty-eight million, one hundred eighty-three thousand, eight hundred seventy-one".