343427640 has 32 divisors (see below), whose sum is σ = 1030283280. Its totient is φ = 91580672.

The previous prime is 343427587. The next prime is 343427653. The reversal of 343427640 is 46724343.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430829 + ... + 1431068.

Almost surely, 2^343427640 is an apocalyptic number.

343427640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

343427640 is an abundant number, since it is smaller than the sum of its proper divisors (686855640).

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

343427640 is a wasteful number, since it uses less digits than its factorization.

343427640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861911 (or 2861907 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 33.

The square root of 343427640 is about 18531.8007759635. The cubic root of 343427640 is about 700.2907907490.

The spelling of 343427640 in words is "three hundred forty-three million, four hundred twenty-seven thousand, six hundred forty".