344404530 has 96 divisors (see below), whose sum is σ = 989449344. Its totient is φ = 82672128.

The previous prime is 344404483. The next prime is 344404531. The reversal of 344404530 is 35404443.

It is a super-2 number, since 2×344404530² = 237228960569041800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 344404494 and 344404503.

It is not an unprimeable number, because it can be changed into a prime (344404531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30297 + ... + 40083.

It is an arithmetic number, because the mean of its divisors is an integer number (10306764).

Almost surely, 2^344404530 is an apocalyptic number.

344404530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 344404530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494724672).

344404530 is an abundant number, since it is smaller than the sum of its proper divisors (645044814).

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

344404530 is a wasteful number, since it uses less digits than its factorization.

344404530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9840 (or 9837 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 344404530 is about 18558.1391847351. The cubic root of 344404530 is about 700.9541613884.

Adding to 344404530 its reverse (35404443), we get a palindrome (379808973).

The spelling of 344404530 in words is "three hundred forty-four million, four hundred four thousand, five hundred thirty".