165404022 has 32 divisors (see below), whose sum is σ = 384480000. Its totient is φ = 46456608.

The previous prime is 165404011. The next prime is 165404059. The reversal of 165404022 is 220404561.

It is a junction number, because it is equal to n+sod(n) for n = 165403983 and 165404001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30897 + ... + 35852.

It is an arithmetic number, because the mean of its divisors is an integer number (12015000).

Almost surely, 2^165404022 is an apocalyptic number.

165404022 is an abundant number, since it is smaller than the sum of its proper divisors (219075978).

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

165404022 is a wasteful number, since it uses less digits than its factorization.

165404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66820.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 165404022 is about 12860.9494983846. The cubic root of 165404022 is about 548.9279635808.

Adding to 165404022 its reverse (220404561), we get a palindrome (385808583).

The spelling of 165404022 in words is "one hundred sixty-five million, four hundred four thousand, twenty-two".