28849765 has 16 divisors (see below), whose sum is σ = 41893632. Its totient is φ = 18618624.

The previous prime is 28849759. The next prime is 28849783. The reversal of 28849765 is 56794882.

It is a cyclic number.

It is not a de Polignac number, because 28849765 - 2³ = 28849757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 23649 + ... + 24838.

It is an arithmetic number, because the mean of its divisors is an integer number (2618352).

Almost surely, 2^28849765 is an apocalyptic number.

It is an amenable number.

28849765 is a deficient number, since it is larger than the sum of its proper divisors (13043867).

28849765 is a wasteful number, since it uses less digits than its factorization.

28849765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48516.

The product of its digits is 967680, while the sum is 49.

The square root of 28849765 is about 5371.1977249027. The cubic root of 28849765 is about 306.7002240898.

The spelling of 28849765 in words is "twenty-eight million, eight hundred forty-nine thousand, seven hundred sixty-five".