28840027 has 2 divisors, whose sum is σ = 28840028. Its totient is φ = 28840026.

The previous prime is 28840001. The next prime is 28840033. The reversal of 28840027 is 72004882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28840027 - 2¹⁹ = 28315739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28840087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14420013 + 14420014.

It is an arithmetic number, because the mean of its divisors is an integer number (14420014).

Almost surely, 2^28840027 is an apocalyptic number.

28840027 is a deficient number, since it is larger than the sum of its proper divisors (1).

28840027 is an equidigital number, since it uses as much as digits as its factorization.

28840027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28840027 is about 5370.2911466698. The cubic root of 28840027 is about 306.6657121636.

The spelling of 28840027 in words is "twenty-eight million, eight hundred forty thousand, twenty-seven".