343444440 has 128 divisors (see below), whose sum is σ = 1066348800. Its totient is φ = 88435200.

The previous prime is 343444433. The next prime is 343444469. The reversal of 343444440 is 44444343.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 343444398 and 343444407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520831 + ... + 521489.

It is an arithmetic number, because the mean of its divisors is an integer number (8330850).

Almost surely, 2^343444440 is an apocalyptic number.

343444440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533174400).

343444440 is an abundant number, since it is smaller than the sum of its proper divisors (722904360).

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

343444440 is a wasteful number, since it uses less digits than its factorization.

343444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

The square root of 343444440 is about 18532.2540453125. The cubic root of 343444440 is about 700.3022096449.

Adding to 343444440 its reverse (44444343), we get a palindrome (387888783).

It can be divided in two parts, 3434 and 44440, that added together give a palindrome (47874).

The spelling of 343444440 in words is "three hundred forty-three million, four hundred forty-four thousand, four hundred forty".