165298728 has 64 divisors (see below), whose sum is σ = 473535360. Its totient is φ = 47102976.

The previous prime is 165298709. The next prime is 165298741. The reversal of 165298728 is 827892561.

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 15 ways as a sum of consecutive naturals, for example, 75700 + ... + 77852.

It is an arithmetic number, because the mean of its divisors is an integer number (7398990).

Almost surely, 2^165298728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165298728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236767680).

165298728 is an abundant number, since it is smaller than the sum of its proper divisors (308236632).

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

165298728 is a wasteful number, since it uses less digits than its factorization.

165298728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2622 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 165298728 is about 12856.8552920222. The cubic root of 165298728 is about 548.8114587758.

The spelling of 165298728 in words is "one hundred sixty-five million, two hundred ninety-eight thousand, seven hundred twenty-eight".