5728287 has 4 divisors (see below), whose sum is σ = 7637720. Its totient is φ = 3818856.

The previous prime is 5728279. The next prime is 5728297. The reversal of 5728287 is 7828275.

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

It is not a de Polignac number, because 5728287 - 2³ = 5728279 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5728207) 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 in 3 ways as a sum of consecutive naturals, for example, 954712 + ... + 954717.

It is an arithmetic number, because the mean of its divisors is an integer number (1909430).

Almost surely, 2^5728287 is an apocalyptic number.

5728287 is a deficient number, since it is larger than the sum of its proper divisors (1909433).

5728287 is a wasteful number, since it uses less digits than its factorization.

5728287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909432.

The product of its digits is 62720, while the sum is 39.

The square root of 5728287 is about 2393.3840059631. The cubic root of 5728287 is about 178.9266055753.

The spelling of 5728287 in words is "five million, seven hundred twenty-eight thousand, two hundred eighty-seven".