346340 has 12 divisors (see below), whose sum is σ = 727356. Its totient is φ = 138528.

The previous prime is 346337. The next prime is 346349. The reversal of 346340 is 43643.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215296 + 131044 = 464^2 + 362^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 17317 = 346340 / (3 + 4 + 6 + 3 + 4 + 0).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (346349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8639 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (60613).

2³⁴⁶³⁴⁰ is an apocalyptic number.

It is an amenable number.

346340 is an abundant number, since it is smaller than the sum of its proper divisors (381016).

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

346340 is a wasteful number, since it uses less digits than its factorization.

346340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326 (or 17324 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 346340 is about 588.5065845001. The cubic root of 346340 is about 70.2264773514.

Adding to 346340 its reverse (43643), we get a palindrome (389983).

It can be divided in two parts, 346 and 340, that added together give a palindrome (686).

The spelling of 346340 in words is "three hundred forty-six thousand, three hundred forty".