344440140 has 48 divisors (see below), whose sum is σ = 1052110080. Its totient is φ = 83500480.

The previous prime is 344440133. The next prime is 344440183. The reversal of 344440140 is 41044443.

It is a self number, because there is not a number n which added to its sum of digits gives 344440140.

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, 260280 + ... + 261599.

It is an arithmetic number, because the mean of its divisors is an integer number (21918960).

Almost surely, 2^344440140 is an apocalyptic number.

344440140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

344440140 is an abundant number, since it is smaller than the sum of its proper divisors (707669940).

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

344440140 is a wasteful number, since it uses less digits than its factorization.

344440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521902 (or 521900 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 344440140 is about 18559.0985772478. The cubic root of 344440140 is about 700.9783191402.

Adding to 344440140 its reverse (41044443), we get a palindrome (385484583).

The spelling of 344440140 in words is "three hundred forty-four million, four hundred forty thousand, one hundred forty".