28500757 has 2 divisors, whose sum is σ = 28500758. Its totient is φ = 28500756.

The previous prime is 28500739. The next prime is 28500763. The reversal of 28500757 is 75700582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 3189796 = 5031^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 28500757 - 2⁷ = 28500629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28500727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14250378 + 14250379.

It is an arithmetic number, because the mean of its divisors is an integer number (14250379).

Almost surely, 2^28500757 is an apocalyptic number.

It is an amenable number.

28500757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28500757 is an equidigital number, since it uses as much as digits as its factorization.

28500757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 28500757 is about 5338.6100250908. The cubic root of 28500757 is about 305.4584416349.

The spelling of 28500757 in words is "twenty-eight million, five hundred thousand, seven hundred fifty-seven".