165212268 has 96 divisors (see below), whose sum is σ = 433520640. Its totient is φ = 48625920.

The previous prime is 165212263. The next prime is 165212297. The reversal of 165212268 is 862212561.

165212268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165212261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614038 + ... + 614306.

It is an arithmetic number, because the mean of its divisors is an integer number (4515840).

Almost surely, 2^165212268 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 165212268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216760320).

165212268 is an abundant number, since it is smaller than the sum of its proper divisors (268308372).

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

165212268 is a wasteful number, since it uses less digits than its factorization.

165212268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 165212268 is about 12853.4924436902. The cubic root of 165212268 is about 548.7157562565.

The spelling of 165212268 in words is "one hundred sixty-five million, two hundred twelve thousand, two hundred sixty-eight".