39462728 has 12 divisors (see below), whose sum is σ = 74025945. Its totient is φ = 19722480.

The previous prime is 39462679. The next prime is 39462737. The reversal of 39462728 is 82726493.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 38167684 + 1295044 = 6178^2 + 1138^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4442.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 16658 + ... + 18878.

Almost surely, 2^39462728 is an apocalyptic number.

It is an amenable number.

39462728 is a deficient number, since it is larger than the sum of its proper divisors (34563217).

39462728 is an frugal number, since it uses more digits than its factorization.

39462728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448 (or 2223 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 39462728 is about 6281.9366440613. The cubic root of 39462728 is about 340.4570784469.

The spelling of 39462728 in words is "thirty-nine million, four hundred sixty-two thousand, seven hundred twenty-eight".