28504327 has 2 divisors, whose sum is σ = 28504328. Its totient is φ = 28504326.

The previous prime is 28504309. The next prime is 28504367. The reversal of 28504327 is 72340582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28504327 - 2¹⁵ = 28471559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28504367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14252163 + 14252164.

It is an arithmetic number, because the mean of its divisors is an integer number (14252164).

Almost surely, 2^28504327 is an apocalyptic number.

28504327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28504327 is an equidigital number, since it uses as much as digits as its factorization.

28504327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28504327 is about 5338.9443713154. The cubic root of 28504327 is about 305.4711949933.

The spelling of 28504327 in words is "twenty-eight million, five hundred four thousand, three hundred twenty-seven".