39005000728 has 16 divisors (see below), whose sum is σ = 73542951000. Its totient is φ = 19393547136.

The previous prime is 39005000717. The next prime is 39005000743. The reversal of 39005000728 is 82700050093.

It is a junction number, because it is equal to n+sod(n) for n = 39005000693 and 39005000702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13617633 + ... + 13620496.

Almost surely, 2^39005000728 is an apocalyptic number.

39005000728 is the 105567-th centered heptagonal number.

It is an amenable number.

39005000728 is a deficient number, since it is larger than the sum of its proper divisors (34537950272).

39005000728 is a wasteful number, since it uses less digits than its factorization.

39005000728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27238314 (or 27238310 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 39005000728 in words is "thirty-nine billion, five million, seven hundred twenty-eight", and thus it is an aban number.