28590757 has 6 divisors (see below), whose sum is σ = 30810822. Its totient is φ = 26373672.

The previous prime is 28590733. The next prime is 28590769. The reversal of 28590757 is 75709582.

It can be written as a sum of positive squares in only one way, i.e., 19793601 + 8797156 = 4449^2 + 2966^2 .

It is not a de Polignac number, because 28590757 - 2¹¹ = 28588709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28590707) 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 in 5 ways as a sum of consecutive naturals, for example, 18538 + ... + 20020.

It is an arithmetic number, because the mean of its divisors is an integer number (5135137).

Almost surely, 2^28590757 is an apocalyptic number.

It is an amenable number.

28590757 is a deficient number, since it is larger than the sum of its proper divisors (2220065).

28590757 is an frugal number, since it uses more digits than its factorization.

28590757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28590757 is about 5347.0325415131. The cubic root of 28590757 is about 305.7796304488.

The spelling of 28590757 in words is "twenty-eight million, five hundred ninety thousand, seven hundred fifty-seven".