165586728 has 16 divisors (see below), whose sum is σ = 413966880. Its totient is φ = 55195568.

The previous prime is 165586727. The next prime is 165586747. The reversal of 165586728 is 827685561.

165586728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165586727) 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, 3449700 + ... + 3449747.

It is an arithmetic number, because the mean of its divisors is an integer number (25872930).

Almost surely, 2^165586728 is an apocalyptic number.

It is an amenable number.

165586728 is an abundant number, since it is smaller than the sum of its proper divisors (248380152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165586728 is a wasteful number, since it uses less digits than its factorization.

165586728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899456 (or 6899452 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 165586728 is about 12868.0506682248. The cubic root of 165586728 is about 549.1300052767.

The spelling of 165586728 in words is "one hundred sixty-five million, five hundred eighty-six thousand, seven hundred twenty-eight".