28328527 has 2 divisors, whose sum is σ = 28328528. Its totient is φ = 28328526.

The previous prime is 28328501. The next prime is 28328543. The reversal of 28328527 is 72582382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28328527 - 2¹¹ = 28326479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28328627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14164263 + 14164264.

It is an arithmetic number, because the mean of its divisors is an integer number (14164264).

Almost surely, 2^28328527 is an apocalyptic number.

28328527 is a deficient number, since it is larger than the sum of its proper divisors (1).

28328527 is an equidigital number, since it uses as much as digits as its factorization.

28328527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 28328527 is about 5322.4549786729. The cubic root of 28328527 is about 304.8419031941.

The spelling of 28328527 in words is "twenty-eight million, three hundred twenty-eight thousand, five hundred twenty-seven".