343405420 has 12 divisors (see below), whose sum is σ = 721151424. Its totient is φ = 137362160.

The previous prime is 343405331. The next prime is 343405441. The reversal of 343405420 is 24504343.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8585116 + ... + 8585155.

It is an arithmetic number, because the mean of its divisors is an integer number (60095952).

Almost surely, 2^343405420 is an apocalyptic number.

It is an amenable number.

343405420 is an abundant number, since it is smaller than the sum of its proper divisors (377746004).

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

343405420 is a wasteful number, since it uses less digits than its factorization.

343405420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170280 (or 17170278 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 343405420 is about 18531.2012562597. The cubic root of 343405420 is about 700.2756873277.

Adding to 343405420 its reverse (24504343), we get a palindrome (367909763).

The spelling of 343405420 in words is "three hundred forty-three million, four hundred five thousand, four hundred twenty".