5728387 has 4 divisors (see below), whose sum is σ = 6546736. Its totient is φ = 4910040.

The previous prime is 5728379. The next prime is 5728391. The reversal of 5728387 is 7838275.

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 5728387 - 2³ = 5728379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5723387) 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 3 ways as a sum of consecutive naturals, for example, 409164 + ... + 409177.

It is an arithmetic number, because the mean of its divisors is an integer number (1636684).

Almost surely, 2^5728387 is an apocalyptic number.

5728387 is a deficient number, since it is larger than the sum of its proper divisors (818349).

5728387 is an equidigital number, since it uses as much as digits as its factorization.

5728387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818348.

The product of its digits is 94080, while the sum is 40.

The square root of 5728387 is about 2393.4048967945. The cubic root of 5728387 is about 178.9276467566.

The spelling of 5728387 in words is "five million, seven hundred twenty-eight thousand, three hundred eighty-seven".