344420340 has 96 divisors (see below), whose sum is σ = 1113969024. Its totient is φ = 78581760.

The previous prime is 344420303. The next prime is 344420359. The reversal of 344420340 is 43024443.

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 344420340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4129 + ... + 26568.

It is an arithmetic number, because the mean of its divisors is an integer number (11603844).

Almost surely, 2^344420340 is an apocalyptic number.

344420340 is a gapful number since it is divisible by the number (30) 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 344420340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556984512).

344420340 is an abundant number, since it is smaller than the sum of its proper divisors (769548684).

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

344420340 is a wasteful number, since it uses less digits than its factorization.

344420340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30737 (or 30735 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 344420340 is about 18558.5651385014. The cubic root of 344420340 is about 700.9648870659.

Adding to 344420340 its reverse (43024443), we get a palindrome (387444783).

The spelling of 344420340 in words is "three hundred forty-four million, four hundred twenty thousand, three hundred forty".