5728639 has 6 divisors (see below), whose sum is σ = 6663984. Its totient is φ = 4910220.

The previous prime is 5728627. The next prime is 5728651. The reversal of 5728639 is 9368275.

It is an interprime number because it is at equal distance from previous prime (5728627) and next prime (5728651).

It is not a de Polignac number, because 5728639 - 2¹³ = 5720447 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 (5728739) 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, 58407 + ... + 58504.

It is an arithmetic number, because the mean of its divisors is an integer number (1110664).

Almost surely, 2^5728639 is an apocalyptic number.

5728639 is a deficient number, since it is larger than the sum of its proper divisors (935345).

5728639 is a wasteful number, since it uses less digits than its factorization.

5728639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116925 (or 116918 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 5728639 is about 2393.4575408810. The cubic root of 5728639 is about 178.9302704798.

The spelling of 5728639 in words is "five million, seven hundred twenty-eight thousand, six hundred thirty-nine".