343741640 has 192 divisors, whose sum is σ = 919296000. Its totient is φ = 115315200.

The previous prime is 343741633. The next prime is 343741679. The reversal of 343741640 is 46147343.

It is a junction number, because it is equal to n+sod(n) for n = 343741597 and 343741606.

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 47 ways as a sum of consecutive naturals, for example, 4351121 + ... + 4351199.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^343741640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343741640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459648000).

343741640 is an abundant number, since it is smaller than the sum of its proper divisors (575554360).

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

343741640 is a wasteful number, since it uses less digits than its factorization.

343741640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 343741640 is about 18540.2707639344. The cubic root of 343741640 is about 700.5041538181.

Adding to 343741640 its reverse (46147343), we get a palindrome (389888983).

The spelling of 343741640 in words is "three hundred forty-three million, seven hundred forty-one thousand, six hundred forty".