28171883 has 2 divisors, whose sum is σ = 28171884. Its totient is φ = 28171882.

The previous prime is 28171867. The next prime is 28171903. The reversal of 28171883 is 38817182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28171883 - 2⁴ = 28171867 is a prime.

It is not a weakly prime, because it can be changed into another prime (28171823) 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, 14085941 + 14085942.

It is an arithmetic number, because the mean of its divisors is an integer number (14085942).

Almost surely, 2^28171883 is an apocalyptic number.

28171883 is a deficient number, since it is larger than the sum of its proper divisors (1).

28171883 is an equidigital number, since it uses as much as digits as its factorization.

28171883 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 28171883 is about 5307.7191900100. The cubic root of 28171883 is about 304.2789848619.

The spelling of 28171883 in words is "twenty-eight million, one hundred seventy-one thousand, eight hundred eighty-three".