344324440 has 64 divisors (see below), whose sum is σ = 811192320. Its totient is φ = 131376000.

The previous prime is 344324419. The next prime is 344324459. The reversal of 344324440 is 44423443.

It is a junction number, because it is equal to n+sod(n) for n = 344324399 and 344324408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86085 + ... + 89995.

It is an arithmetic number, because the mean of its divisors is an integer number (12674880).

Almost surely, 2^344324440 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 344324440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405596160).

344324440 is an abundant number, since it is smaller than the sum of its proper divisors (466867880).

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

344324440 is a wasteful number, since it uses less digits than its factorization.

344324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 4020 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 344324440 is about 18555.9812459487. The cubic root of 344324440 is about 700.8998224100.

Adding to 344324440 its reverse (44423443), we get a palindrome (388747883).

The spelling of 344324440 in words is "three hundred forty-four million, three hundred twenty-four thousand, four hundred forty".