165622432 has 36 divisors (see below), whose sum is σ = 346397310. Its totient is φ = 77935616.

The previous prime is 165622427. The next prime is 165622439. The reversal of 165622432 is 234226561.

165622432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 162919696 + 2702736 = 12764^2 + 1644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165622394 and 165622403.

It is not an unprimeable number, because it can be changed into a prime (165622439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294 + ... + 18202.

Almost surely, 2^165622432 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 165622432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173198655).

165622432 is an abundant number, since it is smaller than the sum of its proper divisors (180774878).

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

165622432 is a wasteful number, since it uses less digits than its factorization.

165622432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17953 (or 17928 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 165622432 is about 12869.4379053632. The cubic root of 165622432 is about 549.1694704540.

Adding to 165622432 its reverse (234226561), we get a palindrome (399848993).

The spelling of 165622432 in words is "one hundred sixty-five million, six hundred twenty-two thousand, four hundred thirty-two".