28689527 has 2 divisors, whose sum is σ = 28689528. Its totient is φ = 28689526.

The previous prime is 28689499. The next prime is 28689559. The reversal of 28689527 is 72598682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28689527 - 2¹⁴ = 28673143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28689587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14344763 + 14344764.

It is an arithmetic number, because the mean of its divisors is an integer number (14344764).

Almost surely, 2^28689527 is an apocalyptic number.

28689527 is a deficient number, since it is larger than the sum of its proper divisors (1).

28689527 is an equidigital number, since it uses as much as digits as its factorization.

28689527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 28689527 is about 5356.2605425801. The cubic root of 28689527 is about 306.1313425088.

The spelling of 28689527 in words is "twenty-eight million, six hundred eighty-nine thousand, five hundred twenty-seven".