343404520 has 32 divisors (see below), whose sum is σ = 791509320. Its totient is φ = 134010880.

The previous prime is 343404473. The next prime is 343404527. The reversal of 343404520 is 25404343.

It can be written as a sum of positive squares in 4 ways, for example, as 206841924 + 136562596 = 14382^2 + 11686^2 .

It is not an unprimeable number, because it can be changed into a prime (343404527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103057 + ... + 106336.

Almost surely, 2^343404520 is an apocalyptic number.

It is an amenable number.

343404520 is an abundant number, since it is smaller than the sum of its proper divisors (448104800).

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

343404520 is a wasteful number, since it uses less digits than its factorization.

343404520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209445 (or 209441 counting only the distinct ones).

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

The square root of 343404520 is about 18531.1769728747. The cubic root of 343404520 is about 700.2750755642.

Adding to 343404520 its reverse (25404343), we get a palindrome (368808863).

The spelling of 343404520 in words is "three hundred forty-three million, four hundred four thousand, five hundred twenty".