165497328 has 120 divisors (see below), whose sum is σ = 488861568. Its totient is φ = 52162176.

The previous prime is 165497317. The next prime is 165497333. The reversal of 165497328 is 823794561.

165497328 is a `hidden beast` number, since 16 + 549 + 73 + 28 = 666.

165497328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354151 + ... + 354617.

Almost surely, 2^165497328 is an apocalyptic number.

165497328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165497328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244430784).

165497328 is an abundant number, since it is smaller than the sum of its proper divisors (323364240).

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

165497328 is a wasteful number, since it uses less digits than its factorization.

165497328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 602 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 165497328 is about 12864.5764796203. The cubic root of 165497328 is about 549.0311626931.

The spelling of 165497328 in words is "one hundred sixty-five million, four hundred ninety-seven thousand, three hundred twenty-eight".