165842728 has 16 divisors (see below), whose sum is σ = 312197760. Its totient is φ = 82590000.

The previous prime is 165842717. The next prime is 165842741. The reversal of 165842728 is 827248561.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39288 + ... + 43303.

It is an arithmetic number, because the mean of its divisors is an integer number (19512360).

Almost surely, 2^165842728 is an apocalyptic number.

It is an amenable number.

165842728 is a deficient number, since it is larger than the sum of its proper divisors (146355032).

165842728 is a wasteful number, since it uses less digits than its factorization.

165842728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82848 (or 82844 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 165842728 is about 12877.9939431575. The cubic root of 165842728 is about 549.4128477892.

The spelling of 165842728 in words is "one hundred sixty-five million, eight hundred forty-two thousand, seven hundred twenty-eight".