28287527 has 2 divisors, whose sum is σ = 28287528. Its totient is φ = 28287526.

The previous prime is 28287521. The next prime is 28287529. The reversal of 28287527 is 72578282.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28287527 - 2⁶ = 28287463 is a prime.

Together with 28287529, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28287521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143763 + 14143764.

It is an arithmetic number, because the mean of its divisors is an integer number (14143764).

Almost surely, 2^28287527 is an apocalyptic number.

28287527 is a deficient number, since it is larger than the sum of its proper divisors (1).

28287527 is an equidigital number, since it uses as much as digits as its factorization.

28287527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125440, while the sum is 41.

The square root of 28287527 is about 5318.6019779638. The cubic root of 28287527 is about 304.6947658508.

The spelling of 28287527 in words is "twenty-eight million, two hundred eighty-seven thousand, five hundred twenty-seven".