5728491 has 6 divisors (see below), whose sum is σ = 8274500. Its totient is φ = 3818988.

The previous prime is 5728477. The next prime is 5728517. The reversal of 5728491 is 1948275.

5728491 is a `hidden beast` number, since 572 + 84 + 9 + 1 = 666.

It is not a de Polignac number, because 5728491 - 2⁷ = 5728363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5728441) 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, 318241 + ... + 318258.

Almost surely, 2^5728491 is an apocalyptic number.

5728491 is a deficient number, since it is larger than the sum of its proper divisors (2546009).

5728491 is a wasteful number, since it uses less digits than its factorization.

5728491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636505 (or 636502 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 5728491 is about 2393.4266230658. The cubic root of 5728491 is about 178.9287295724.

It can be divided in two parts, 57284 and 91, that added together give a palindrome (57375).

The spelling of 5728491 in words is "five million, seven hundred twenty-eight thousand, four hundred ninety-one".