1533606728 has 16 divisors (see below), whose sum is σ = 2929768380. Its totient is φ = 752335168.

The previous prime is 1533606713. The next prime is 1533606731. The reversal of 1533606728 is 8276063351.

It can be written as a sum of positive squares in 2 ways, for example, as 1502492644 + 31114084 = 38762^2 + 5578^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808075 + ... + 1808922.

Almost surely, 2^1533606728 is an apocalyptic number.

It is an amenable number.

1533606728 is a deficient number, since it is larger than the sum of its proper divisors (1396161652).

1533606728 is a wasteful number, since it uses less digits than its factorization.

1533606728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617056 (or 3617052 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1533606728 is about 39161.2911942392. The cubic root of 1533606728 is about 1153.2000920471.

The spelling of 1533606728 in words is "one billion, five hundred thirty-three million, six hundred six thousand, seven hundred twenty-eight".