28539853 has 2 divisors, whose sum is σ = 28539854. Its totient is φ = 28539852.

The previous prime is 28539781. The next prime is 28539877. The reversal of 28539853 is 35893582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14424804 + 14115049 = 3798^2 + 3757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28539853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28539053) 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, 14269926 + 14269927.

It is an arithmetic number, because the mean of its divisors is an integer number (14269927).

Almost surely, 2^28539853 is an apocalyptic number.

It is an amenable number.

28539853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28539853 is an equidigital number, since it uses as much as digits as its factorization.

28539853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 43.

The square root of 28539853 is about 5342.2703974996. The cubic root of 28539853 is about 305.5980490005.

It can be divided in two parts, 28539 and 853, that added together give a palindrome (29392).

The spelling of 28539853 in words is "twenty-eight million, five hundred thirty-nine thousand, eight hundred fifty-three".