28528459 has 2 divisors, whose sum is σ = 28528460. Its totient is φ = 28528458.

The previous prime is 28528457. The next prime is 28528477. The reversal of 28528459 is 95482582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28528459 - 2¹ = 28528457 is a prime.

Together with 28528457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28528457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14264229 + 14264230.

It is an arithmetic number, because the mean of its divisors is an integer number (14264230).

Almost surely, 2^28528459 is an apocalyptic number.

28528459 is a deficient number, since it is larger than the sum of its proper divisors (1).

28528459 is an equidigital number, since it uses as much as digits as its factorization.

28528459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 43.

The square root of 28528459 is about 5341.2038905101. The cubic root of 28528459 is about 305.5573754945.

It can be divided in two parts, 2852 and 8459, that added together give a palindrome (11311).

The spelling of 28528459 in words is "twenty-eight million, five hundred twenty-eight thousand, four hundred fifty-nine".