28383871 has 2 divisors, whose sum is σ = 28383872. Its totient is φ = 28383870.

The previous prime is 28383857. The next prime is 28383881. The reversal of 28383871 is 17838382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28383871 - 2⁷ = 28383743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28383811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14191935 + 14191936.

It is an arithmetic number, because the mean of its divisors is an integer number (14191936).

Almost surely, 2^28383871 is an apocalyptic number.

28383871 is a deficient number, since it is larger than the sum of its proper divisors (1).

28383871 is an equidigital number, since it uses as much as digits as its factorization.

28383871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 28383871 is about 5327.6515464133. The cubic root of 28383871 is about 305.0402920881.

The spelling of 28383871 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred seventy-one".