343848640 has 56 divisors (see below), whose sum is σ = 837864720. Its totient is φ = 134335488.

The previous prime is 343848629. The next prime is 343848649. The reversal of 343848640 is 46848343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 343848593 and 343848602.

It is not an unprimeable number, because it can be changed into a prime (343848649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266 + ... + 26254.

It is an arithmetic number, because the mean of its divisors is an integer number (14961870).

Almost surely, 2^343848640 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 343848640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418932360).

343848640 is an abundant number, since it is smaller than the sum of its proper divisors (494016080).

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

343848640 is a wasteful number, since it uses less digits than its factorization.

343848640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25049 (or 25039 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 343848640 is about 18543.1561499115. The cubic root of 343848640 is about 700.5768306582.

The spelling of 343848640 in words is "three hundred forty-three million, eight hundred forty-eight thousand, six hundred forty".