39528728 has 16 divisors (see below), whose sum is σ = 76120080. Its totient is φ = 19230048.

The previous prime is 39528719. The next prime is 39528767. The reversal of 39528728 is 82782593.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66476 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (4757505).

Almost surely, 2^39528728 is an apocalyptic number.

It is an amenable number.

39528728 is a deficient number, since it is larger than the sum of its proper divisors (36591352).

39528728 is a wasteful number, since it uses less digits than its factorization.

39528728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133586 (or 133582 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 39528728 is about 6287.1876065535. The cubic root of 39528728 is about 340.6467734924.

The spelling of 39528728 in words is "thirty-nine million, five hundred twenty-eight thousand, seven hundred twenty-eight".