164340252 has 60 divisors (see below), whose sum is σ = 436950360. Its totient is φ = 53845344.

The previous prime is 164340251. The next prime is 164340257. The reversal of 164340252 is 252043461.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164340251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14818 + ... + 23414.

It is an arithmetic number, because the mean of its divisors is an integer number (7282506).

Almost surely, 2^164340252 is an apocalyptic number.

164340252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164340252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218475180).

164340252 is an abundant number, since it is smaller than the sum of its proper divisors (272610108).

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

164340252 is a wasteful number, since it uses less digits than its factorization.

164340252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672 (or 8661 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 164340252 is about 12819.5262002931. The cubic root of 164340252 is about 547.7486504271.

The spelling of 164340252 in words is "one hundred sixty-four million, three hundred forty thousand, two hundred fifty-two".