343909872 has 60 divisors (see below), whose sum is σ = 984870744. Its totient is φ = 111968640.

The previous prime is 343909837. The next prime is 343909889. The reversal of 343909872 is 278909343.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21579 + ... + 33962.

Almost surely, 2^343909872 is an apocalyptic number.

It is an amenable number.

343909872 is an abundant number, since it is smaller than the sum of its proper divisors (640960872).

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

343909872 is a wasteful number, since it uses less digits than its factorization.

343909872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55598 (or 55589 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 343909872 is about 18544.8071437802. The cubic root of 343909872 is about 700.6184140463.

The spelling of 343909872 in words is "three hundred forty-three million, nine hundred nine thousand, eight hundred seventy-two".