343453440 has 288 divisors, whose sum is σ = 1229147136. Its totient is φ = 81018880.

The previous prime is 343453423. The next prime is 343453447. The reversal of 343453440 is 44354343.

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 = 343453398 and 343453407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343453447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1985194 + ... + 1985366.

It is an arithmetic number, because the mean of its divisors is an integer number (4267872).

Almost surely, 2^343453440 is an apocalyptic number.

343453440 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 343453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614573568).

343453440 is an abundant number, since it is smaller than the sum of its proper divisors (885693696).

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

343453440 is a wasteful number, since it uses less digits than its factorization.

343453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

The square root of 343453440 is about 18532.4968636177. The cubic root of 343453440 is about 700.3083267574.

The spelling of 343453440 in words is "three hundred forty-three million, four hundred fifty-three thousand, four hundred forty".