344840840 has 64 divisors (see below), whose sum is σ = 823478400. Its totient is φ = 129682432.

The previous prime is 344840761. The next prime is 344840849. The reversal of 344840840 is 48048443.

It is a self number, because there is not a number n which added to its sum of digits gives 344840840.

It is not an unprimeable number, because it can be changed into a prime (344840849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51104 + ... + 57456.

It is an arithmetic number, because the mean of its divisors is an integer number (12866850).

Almost surely, 2^344840840 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 344840840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411739200).

344840840 is an abundant number, since it is smaller than the sum of its proper divisors (478637560).

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

344840840 is a wasteful number, since it uses less digits than its factorization.

344840840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 35.

The square root of 344840840 is about 18569.8906835770. The cubic root of 344840840 is about 701.2500384997.

The spelling of 344840840 in words is "three hundred forty-four million, eight hundred forty thousand, eight hundred forty".