343920 has 40 divisors (see below), whose sum is σ = 1066896. Its totient is φ = 91648.

The previous prime is 343913. The next prime is 343933. The reversal of 343920 is 29343.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477 + ... + 956.

2³⁴³⁹²⁰ is an apocalyptic number.

343920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

343920 is an abundant number, since it is smaller than the sum of its proper divisors (722976).

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

343920 is a wasteful number, since it uses less digits than its factorization.

343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 343920 is about 586.4469285451. The cubic root of 343920 is about 70.0625291617.

The spelling of 343920 in words is "three hundred forty-three thousand, nine hundred twenty".