344740422 has 64 divisors (see below), whose sum is σ = 788175360. Its totient is φ = 99711744.

The previous prime is 344740421. The next prime is 344740439. The reversal of 344740422 is 224047443.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 344740422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344740421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104218 + ... + 107474.

It is an arithmetic number, because the mean of its divisors is an integer number (12315240).

Almost surely, 2^344740422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344740422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394087680).

344740422 is an abundant number, since it is smaller than the sum of its proper divisors (443434938).

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

344740422 is a wasteful number, since it uses less digits than its factorization.

344740422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357.

The product of its (nonzero) digits is 21504, while the sum is 30.

The square root of 344740422 is about 18567.1867012749. The cubic root of 344740422 is about 701.1819636522.

Adding to 344740422 its reverse (224047443), we get a palindrome (568787865).

The spelling of 344740422 in words is "three hundred forty-four million, seven hundred forty thousand, four hundred twenty-two".