5728257 has 6 divisors (see below), whose sum is σ = 8274162. Its totient is φ = 3818832.

The previous prime is 5728243. The next prime is 5728271. The reversal of 5728257 is 7528275.

5728257 is a `hidden beast` number, since 572 + 82 + 5 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (5728243) and next prime (5728271).

It can be written as a sum of positive squares in only one way, i.e., 4309776 + 1418481 = 2076^2 + 1191^2 .

It is not a de Polignac number, because 5728257 - 2⁴ = 5728241 is a prime.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318228 + ... + 318245.

It is an arithmetic number, because the mean of its divisors is an integer number (1379027).

Almost surely, 2^5728257 is an apocalyptic number.

It is an amenable number.

5728257 is a deficient number, since it is larger than the sum of its proper divisors (2545905).

5728257 is a wasteful number, since it uses less digits than its factorization.

5728257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636479 (or 636476 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 5728257 is about 2393.3777386781. The cubic root of 5728257 is about 178.9262932185.

The spelling of 5728257 in words is "five million, seven hundred twenty-eight thousand, two hundred fifty-seven".