39006728 has 16 divisors (see below), whose sum is σ = 74518380. Its totient is φ = 19135168.

The previous prime is 39006727. The next prime is 39006733. The reversal of 39006728 is 82760093.

It can be written as a sum of positive squares in 2 ways, for example, as 37920964 + 1085764 = 6158^2 + 1042^2 .

It is not an unprimeable number, because it can be changed into a prime (39006727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45575 + ... + 46422.

Almost surely, 2^39006728 is an apocalyptic number.

It is an amenable number.

39006728 is a deficient number, since it is larger than the sum of its proper divisors (35511652).

39006728 is a wasteful number, since it uses less digits than its factorization.

39006728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92056 (or 92052 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 39006728 is about 6245.5366462779. The cubic root of 39006728 is about 339.1406440952.

The spelling of 39006728 in words is "thirty-nine million, six thousand, seven hundred twenty-eight".