344345420 has 96 divisors (see below), whose sum is σ = 792529920. Its totient is φ = 125269760.

The previous prime is 344345413. The next prime is 344345423. The reversal of 344345420 is 24543443.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (344345423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107065 + ... + 1107375.

It is an arithmetic number, because the mean of its divisors is an integer number (8255520).

Almost surely, 2^344345420 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 344345420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396264960).

344345420 is an abundant number, since it is smaller than the sum of its proper divisors (448184500).

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

344345420 is a wasteful number, since it uses less digits than its factorization.

344345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 344345420 is about 18556.5465537098. The cubic root of 344345420 is about 700.9140576079.

Adding to 344345420 its reverse (24543443), we get a palindrome (368888863).

The spelling of 344345420 in words is "three hundred forty-four million, three hundred forty-five thousand, four hundred twenty".