345424 has 10 divisors (see below), whose sum is σ = 669290. Its totient is φ = 172704.

The previous prime is 345413. The next prime is 345431. The reversal of 345424 is 424543.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 291600 + 53824 = 540^2 + 232^2 .

It is a d-powerful number, because it can be written as 3 + 4⁵ + 4⁶ + 5⁷ + 2⁵ + 4⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 345395 and 345404.

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 345424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10779 + ... + 10810.

It is an arithmetic number, because the mean of its divisors is an integer number (66929).

2³⁴⁵⁴²⁴ is an apocalyptic number.

It is an amenable number.

345424 is a deficient number, since it is larger than the sum of its proper divisors (323866).

345424 is a wasteful number, since it uses less digits than its factorization.

345424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21597 (or 21591 counting only the distinct ones).

The product of its digits is 1920, while the sum is 22.

The square root of 345424 is about 587.7278281654. The cubic root of 345424 is about 70.1645110295.

Adding to 345424 its reverse (424543), we get a palindrome (769967).

The spelling of 345424 in words is "three hundred forty-five thousand, four hundred twenty-four".