344425872 has 160 divisors (see below), whose sum is σ = 1075486720. Its totient is φ = 92897280.

The previous prime is 344425843. The next prime is 344425877. The reversal of 344425872 is 278524443.

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 344425872.

It is not an unprimeable number, because it can be changed into a prime (344425877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447504 + ... + 448272.

It is an arithmetic number, because the mean of its divisors is an integer number (6721792).

Almost surely, 2^344425872 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 344425872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537743360).

344425872 is an abundant number, since it is smaller than the sum of its proper divisors (731060848).

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

344425872 is a wasteful number, since it uses less digits than its factorization.

344425872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 855 counting only the distinct ones).

The product of its digits is 215040, while the sum is 39.

The square root of 344425872 is about 18558.7141795977. The cubic root of 344425872 is about 700.9686399579.

The spelling of 344425872 in words is "three hundred forty-four million, four hundred twenty-five thousand, eight hundred seventy-two".