344220540 has 48 divisors (see below), whose sum is σ = 978214272. Its totient is φ = 90421056.

The previous prime is 344220529. The next prime is 344220571. The reversal of 344220540 is 45022443.

It is a self number, because there is not a number n which added to its sum of digits gives 344220540.

It is a congruent number.

It is an unprimeable number.

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, 38794 + ... + 46833.

It is an arithmetic number, because the mean of its divisors is an integer number (20379464).

Almost surely, 2^344220540 is an apocalyptic number.

344220540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

344220540 is an abundant number, since it is smaller than the sum of its proper divisors (633993732).

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

344220540 is a wasteful number, since it uses less digits than its factorization.

344220540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85706 (or 85704 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 344220540 is about 18553.1813983478. The cubic root of 344220540 is about 700.8293164093.

Adding to 344220540 its reverse (45022443), we get a palindrome (389242983).

The spelling of 344220540 in words is "three hundred forty-four million, two hundred twenty thousand, five hundred forty".