165622230 has 48 divisors (see below), whose sum is σ = 434594160. Its totient is φ = 43758144.

The previous prime is 165622217. The next prime is 165622231. The reversal of 165622230 is 32226561.

165622230 is a `hidden beast` number, since 1 + 6 + 5 + 622 + 2 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 165622194 and 165622203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165622231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1369 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (9054045).

Almost surely, 2^165622230 is an apocalyptic number.

165622230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165622230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217297080).

165622230 is an abundant number, since it is smaller than the sum of its proper divisors (268971930).

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

165622230 is a wasteful number, since it uses less digits than its factorization.

165622230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17005 (or 17002 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 165622230 is about 12869.4300573102. The cubic root of 165622230 is about 549.1692471906.

Adding to 165622230 its reverse (32226561), we get a palindrome (197848791).

The spelling of 165622230 in words is "one hundred sixty-five million, six hundred twenty-two thousand, two hundred thirty".