165963228 has 12 divisors (see below), whose sum is σ = 387247560. Its totient is φ = 55321072.

The previous prime is 165963223. The next prime is 165963263. The reversal of 165963228 is 822369561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 165963228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165963223) 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, 6915123 + ... + 6915146.

It is an arithmetic number, because the mean of its divisors is an integer number (32270630).

Almost surely, 2^165963228 is an apocalyptic number.

It is an amenable number.

165963228 is an abundant number, since it is smaller than the sum of its proper divisors (221284332).

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

165963228 is a wasteful number, since it uses less digits than its factorization.

165963228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13830276 (or 13830274 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 165963228 is about 12882.6716173316. The cubic root of 165963228 is about 549.5458819011.

The spelling of 165963228 in words is "one hundred sixty-five million, nine hundred sixty-three thousand, two hundred twenty-eight".