28560751 has 4 divisors (see below), whose sum is σ = 28778904. Its totient is φ = 28342600.

The previous prime is 28560713. The next prime is 28560773. The reversal of 28560751 is 15706582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15706582 = 2 ⋅7853291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28560751 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 (28560251) 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, 108880 + ... + 109141.

It is an arithmetic number, because the mean of its divisors is an integer number (7194726).

Almost surely, 2^28560751 is an apocalyptic number.

28560751 is a deficient number, since it is larger than the sum of its proper divisors (218153).

28560751 is a wasteful number, since it uses less digits than its factorization.

28560751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218152.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 28560751 is about 5344.2259495646. The cubic root of 28560751 is about 305.6726210953.

The spelling of 28560751 in words is "twenty-eight million, five hundred sixty thousand, seven hundred fifty-one".