28327757 has 2 divisors, whose sum is σ = 28327758. Its totient is φ = 28327756.

The previous prime is 28327703. The next prime is 28327787. The reversal of 28327757 is 75772382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 649636 = 5261^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 28327757 - 2¹⁴ = 28311373 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 (28327787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14163878 + 14163879.

It is an arithmetic number, because the mean of its divisors is an integer number (14163879).

Almost surely, 2^28327757 is an apocalyptic number.

It is an amenable number.

28327757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28327757 is an equidigital number, since it uses as much as digits as its factorization.

28327757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 41.

The square root of 28327757 is about 5322.3826431402. The cubic root of 28327757 is about 304.8391411915.

The spelling of 28327757 in words is "twenty-eight million, three hundred twenty-seven thousand, seven hundred fifty-seven".