344021320 has 16 divisors (see below), whose sum is σ = 774048060. Its totient is φ = 137608512.

The previous prime is 344021311. The next prime is 344021323. The reversal of 344021320 is 23120443.

It can be written as a sum of positive squares in 2 ways, for example, as 333354564 + 10666756 = 18258^2 + 3266^2 .

It is a super-2 number, since 2×344021320² = 236701337229084800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (344021323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4300227 + ... + 4300306.

Almost surely, 2^344021320 is an apocalyptic number.

It is an amenable number.

344021320 is an abundant number, since it is smaller than the sum of its proper divisors (430026740).

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

344021320 is a wasteful number, since it uses less digits than its factorization.

344021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8600544 (or 8600540 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 344021320 is about 18547.8117307676. The cubic root of 344021320 is about 700.6940870587.

Adding to 344021320 its reverse (23120443), we get a palindrome (367141763).

The spelling of 344021320 in words is "three hundred forty-four million, twenty-one thousand, three hundred twenty".