28630759 has 4 divisors (see below), whose sum is σ = 29171016. Its totient is φ = 28090504.

The previous prime is 28630757. The next prime is 28630769. The reversal of 28630759 is 95703682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28630759 - 2¹ = 28630757 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 (28630757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270049 + ... + 270154.

It is an arithmetic number, because the mean of its divisors is an integer number (7292754).

Almost surely, 2^28630759 is an apocalyptic number.

28630759 is a deficient number, since it is larger than the sum of its proper divisors (540257).

28630759 is an equidigital number, since it uses as much as digits as its factorization.

28630759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540256.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 28630759 is about 5350.7718134863. The cubic root of 28630759 is about 305.9221718140.

The spelling of 28630759 in words is "twenty-eight million, six hundred thirty thousand, seven hundred fifty-nine".