165744222 has 64 divisors (see below), whose sum is σ = 401587200. Its totient is φ = 44593920.

The previous prime is 165744209. The next prime is 165744247. The reversal of 165744222 is 222447561.

165744222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165744222² = 54942294252770568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48279 + ... + 51597.

It is an arithmetic number, because the mean of its divisors is an integer number (6274800).

Almost surely, 2^165744222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165744222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200793600).

165744222 is an abundant number, since it is smaller than the sum of its proper divisors (235842978).

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

165744222 is a wasteful number, since it uses less digits than its factorization.

165744222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401.

The product of its digits is 26880, while the sum is 33.

The square root of 165744222 is about 12874.1687887024. The cubic root of 165744222 is about 549.3040475591.

The spelling of 165744222 in words is "one hundred sixty-five million, seven hundred forty-four thousand, two hundred twenty-two".